| 1 | /* |
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| 2 | * This file is part of the flashrom project. |
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| 3 | * |
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| 4 | * Copyright (C) 2007, 2008, 2009, 2010 Carl-Daniel Hailfinger |
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| 5 | * Copyright (C) 2008 coresystems GmbH |
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| 6 | * |
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| 7 | * This program is free software; you can redistribute it and/or modify |
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| 8 | * it under the terms of the GNU General Public License as published by |
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| 9 | * the Free Software Foundation; version 2 of the License. |
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| 10 | * |
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| 11 | * This program is distributed in the hope that it will be useful, |
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 14 | * GNU General Public License for more details. |
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| 15 | * |
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| 16 | * You should have received a copy of the GNU General Public License |
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| 17 | * along with this program; if not, write to the Free Software |
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| 18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
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| 19 | */ |
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| 20 | |
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| 21 | /* |
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| 22 | * Contains the common SPI chip driver functions |
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| 23 | */ |
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| 24 | |
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| 25 | #include <string.h> |
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| 26 | #include "flash.h" |
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| 27 | #include "flashchips.h" |
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| 28 | #include "chipdrivers.h" |
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| 29 | #include "programmer.h" |
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| 30 | #include "spi.h" |
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| 31 | |
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| 32 | static int spi_rdid(struct flashctx *flash, unsigned char *readarr, int bytes) |
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| 33 | { |
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| 34 | static const unsigned char cmd[JEDEC_RDID_OUTSIZE] = { JEDEC_RDID }; |
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| 35 | int ret; |
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| 36 | int i; |
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| 37 | |
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| 38 | ret = spi_send_command(flash, sizeof(cmd), bytes, cmd, readarr); |
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| 39 | if (ret) |
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| 40 | return ret; |
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| 41 | msg_cspew("RDID returned"); |
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| 42 | for (i = 0; i < bytes; i++) |
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| 43 | msg_cspew(" 0x%02x", readarr[i]); |
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| 44 | msg_cspew(". "); |
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| 45 | return 0; |
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| 46 | } |
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| 47 | |
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| 48 | static int spi_rems(struct flashctx *flash, unsigned char *readarr) |
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| 49 | { |
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| 50 | unsigned char cmd[JEDEC_REMS_OUTSIZE] = { JEDEC_REMS, 0, 0, 0 }; |
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| 51 | uint32_t readaddr; |
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| 52 | int ret; |
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| 53 | |
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| 54 | ret = spi_send_command(flash, sizeof(cmd), JEDEC_REMS_INSIZE, cmd, |
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| 55 | readarr); |
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| 56 | if (ret == SPI_INVALID_ADDRESS) { |
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| 57 | /* Find the lowest even address allowed for reads. */ |
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| 58 | readaddr = (spi_get_valid_read_addr(flash) + 1) & ~1; |
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| 59 | cmd[1] = (readaddr >> 16) & 0xff, |
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| 60 | cmd[2] = (readaddr >> 8) & 0xff, |
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| 61 | cmd[3] = (readaddr >> 0) & 0xff, |
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| 62 | ret = spi_send_command(flash, sizeof(cmd), JEDEC_REMS_INSIZE, |
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| 63 | cmd, readarr); |
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| 64 | } |
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| 65 | if (ret) |
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| 66 | return ret; |
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| 67 | msg_cspew("REMS returned 0x%02x 0x%02x. ", readarr[0], readarr[1]); |
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| 68 | return 0; |
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| 69 | } |
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| 70 | |
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| 71 | static int spi_res(struct flashctx *flash, unsigned char *readarr, int bytes) |
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| 72 | { |
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| 73 | unsigned char cmd[JEDEC_RES_OUTSIZE] = { JEDEC_RES, 0, 0, 0 }; |
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| 74 | uint32_t readaddr; |
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| 75 | int ret; |
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| 76 | int i; |
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| 77 | |
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| 78 | ret = spi_send_command(flash, sizeof(cmd), bytes, cmd, readarr); |
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| 79 | if (ret == SPI_INVALID_ADDRESS) { |
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| 80 | /* Find the lowest even address allowed for reads. */ |
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| 81 | readaddr = (spi_get_valid_read_addr(flash) + 1) & ~1; |
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| 82 | cmd[1] = (readaddr >> 16) & 0xff, |
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| 83 | cmd[2] = (readaddr >> 8) & 0xff, |
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| 84 | cmd[3] = (readaddr >> 0) & 0xff, |
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| 85 | ret = spi_send_command(flash, sizeof(cmd), bytes, cmd, readarr); |
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| 86 | } |
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| 87 | if (ret) |
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| 88 | return ret; |
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| 89 | msg_cspew("RES returned"); |
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| 90 | for (i = 0; i < bytes; i++) |
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| 91 | msg_cspew(" 0x%02x", readarr[i]); |
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| 92 | msg_cspew(". "); |
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| 93 | return 0; |
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| 94 | } |
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| 95 | |
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| 96 | int spi_write_enable(struct flashctx *flash) |
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| 97 | { |
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| 98 | static const unsigned char cmd[JEDEC_WREN_OUTSIZE] = { JEDEC_WREN }; |
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| 99 | int result; |
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| 100 | |
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| 101 | /* Send WREN (Write Enable) */ |
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| 102 | result = spi_send_command(flash, sizeof(cmd), 0, cmd, NULL); |
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| 103 | |
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| 104 | if (result) |
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| 105 | msg_cerr("%s failed\n", __func__); |
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| 106 | |
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| 107 | return result; |
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| 108 | } |
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| 109 | |
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| 110 | int spi_write_disable(struct flashctx *flash) |
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| 111 | { |
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| 112 | static const unsigned char cmd[JEDEC_WRDI_OUTSIZE] = { JEDEC_WRDI }; |
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| 113 | |
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| 114 | /* Send WRDI (Write Disable) */ |
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| 115 | return spi_send_command(flash, sizeof(cmd), 0, cmd, NULL); |
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| 116 | } |
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| 117 | |
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| 118 | static int probe_spi_rdid_generic(struct flashctx *flash, int bytes) |
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| 119 | { |
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| 120 | unsigned char readarr[4]; |
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| 121 | uint32_t id1; |
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| 122 | uint32_t id2; |
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| 123 | |
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| 124 | if (spi_rdid(flash, readarr, bytes)) { |
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| 125 | return 0; |
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| 126 | } |
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| 127 | |
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| 128 | if (!oddparity(readarr[0])) |
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| 129 | msg_cdbg("RDID byte 0 parity violation. "); |
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| 130 | |
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| 131 | /* Check if this is a continuation vendor ID. |
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| 132 | * FIXME: Handle continuation device IDs. |
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| 133 | */ |
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| 134 | if (readarr[0] == 0x7f) { |
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| 135 | if (!oddparity(readarr[1])) |
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| 136 | msg_cdbg("RDID byte 1 parity violation. "); |
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| 137 | id1 = (readarr[0] << 8) | readarr[1]; |
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| 138 | id2 = readarr[2]; |
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| 139 | if (bytes > 3) { |
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| 140 | id2 <<= 8; |
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| 141 | id2 |= readarr[3]; |
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| 142 | } |
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| 143 | } else { |
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| 144 | id1 = readarr[0]; |
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| 145 | id2 = (readarr[1] << 8) | readarr[2]; |
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| 146 | } |
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| 147 | |
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| 148 | msg_cdbg("%s: id1 0x%02x, id2 0x%02x\n", __func__, id1, id2); |
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| 149 | |
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| 150 | if (id1 == flash->manufacture_id && id2 == flash->model_id) { |
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| 151 | /* Print the status register to tell the |
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| 152 | * user about possible write protection. |
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| 153 | */ |
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| 154 | spi_prettyprint_status_register(flash); |
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| 155 | |
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| 156 | return 1; |
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| 157 | } |
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| 158 | |
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| 159 | /* Test if this is a pure vendor match. */ |
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| 160 | if (id1 == flash->manufacture_id && |
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| 161 | GENERIC_DEVICE_ID == flash->model_id) |
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| 162 | return 1; |
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| 163 | |
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| 164 | /* Test if there is any vendor ID. */ |
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| 165 | if (GENERIC_MANUF_ID == flash->manufacture_id && |
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| 166 | id1 != 0xff) |
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| 167 | return 1; |
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| 168 | |
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| 169 | return 0; |
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| 170 | } |
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| 171 | |
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| 172 | int probe_spi_rdid(struct flashctx *flash) |
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| 173 | { |
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| 174 | return probe_spi_rdid_generic(flash, 3); |
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| 175 | } |
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| 176 | |
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| 177 | int probe_spi_rdid4(struct flashctx *flash) |
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| 178 | { |
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| 179 | /* Some SPI controllers do not support commands with writecnt=1 and |
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| 180 | * readcnt=4. |
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| 181 | */ |
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| 182 | switch (flash->pgm->spi.type) { |
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| 183 | #if CONFIG_INTERNAL == 1 |
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| 184 | #if defined(__i386__) || defined(__x86_64__) |
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| 185 | case SPI_CONTROLLER_IT87XX: |
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| 186 | case SPI_CONTROLLER_WBSIO: |
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| 187 | msg_cinfo("4 byte RDID not supported on this SPI controller\n"); |
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| 188 | return 0; |
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| 189 | break; |
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| 190 | #endif |
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| 191 | #endif |
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| 192 | default: |
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| 193 | return probe_spi_rdid_generic(flash, 4); |
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| 194 | } |
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| 195 | |
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| 196 | return 0; |
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| 197 | } |
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| 198 | |
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| 199 | int probe_spi_rems(struct flashctx *flash) |
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| 200 | { |
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| 201 | unsigned char readarr[JEDEC_REMS_INSIZE]; |
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| 202 | uint32_t id1, id2; |
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| 203 | |
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| 204 | if (spi_rems(flash, readarr)) { |
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| 205 | return 0; |
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| 206 | } |
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| 207 | |
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| 208 | id1 = readarr[0]; |
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| 209 | id2 = readarr[1]; |
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| 210 | |
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| 211 | msg_cdbg("%s: id1 0x%x, id2 0x%x\n", __func__, id1, id2); |
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| 212 | |
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| 213 | if (id1 == flash->manufacture_id && id2 == flash->model_id) { |
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| 214 | /* Print the status register to tell the |
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| 215 | * user about possible write protection. |
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| 216 | */ |
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| 217 | spi_prettyprint_status_register(flash); |
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| 218 | |
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| 219 | return 1; |
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| 220 | } |
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| 221 | |
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| 222 | /* Test if this is a pure vendor match. */ |
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| 223 | if (id1 == flash->manufacture_id && |
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| 224 | GENERIC_DEVICE_ID == flash->model_id) |
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| 225 | return 1; |
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| 226 | |
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| 227 | /* Test if there is any vendor ID. */ |
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| 228 | if (GENERIC_MANUF_ID == flash->manufacture_id && |
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| 229 | id1 != 0xff) |
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| 230 | return 1; |
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| 231 | |
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| 232 | return 0; |
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| 233 | } |
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| 234 | |
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| 235 | int probe_spi_res1(struct flashctx *flash) |
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| 236 | { |
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| 237 | static const unsigned char allff[] = {0xff, 0xff, 0xff}; |
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| 238 | static const unsigned char all00[] = {0x00, 0x00, 0x00}; |
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| 239 | unsigned char readarr[3]; |
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| 240 | uint32_t id2; |
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| 241 | |
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| 242 | /* We only want one-byte RES if RDID and REMS are unusable. */ |
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| 243 | |
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| 244 | /* Check if RDID is usable and does not return 0xff 0xff 0xff or |
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| 245 | * 0x00 0x00 0x00. In that case, RES is pointless. |
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| 246 | */ |
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| 247 | if (!spi_rdid(flash, readarr, 3) && memcmp(readarr, allff, 3) && |
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| 248 | memcmp(readarr, all00, 3)) { |
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| 249 | msg_cdbg("Ignoring RES in favour of RDID.\n"); |
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| 250 | return 0; |
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| 251 | } |
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| 252 | /* Check if REMS is usable and does not return 0xff 0xff or |
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| 253 | * 0x00 0x00. In that case, RES is pointless. |
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| 254 | */ |
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| 255 | if (!spi_rems(flash, readarr) && |
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| 256 | memcmp(readarr, allff, JEDEC_REMS_INSIZE) && |
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| 257 | memcmp(readarr, all00, JEDEC_REMS_INSIZE)) { |
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| 258 | msg_cdbg("Ignoring RES in favour of REMS.\n"); |
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| 259 | return 0; |
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| 260 | } |
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| 261 | |
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| 262 | if (spi_res(flash, readarr, 1)) { |
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| 263 | return 0; |
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| 264 | } |
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| 265 | |
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| 266 | id2 = readarr[0]; |
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| 267 | |
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| 268 | msg_cdbg("%s: id 0x%x\n", __func__, id2); |
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| 269 | |
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| 270 | if (id2 != flash->model_id) |
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| 271 | return 0; |
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| 272 | |
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| 273 | /* Print the status register to tell the |
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| 274 | * user about possible write protection. |
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| 275 | */ |
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| 276 | spi_prettyprint_status_register(flash); |
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| 277 | return 1; |
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| 278 | } |
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| 279 | |
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| 280 | int probe_spi_res2(struct flashctx *flash) |
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| 281 | { |
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| 282 | unsigned char readarr[2]; |
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| 283 | uint32_t id1, id2; |
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| 284 | |
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| 285 | if (spi_res(flash, readarr, 2)) { |
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| 286 | return 0; |
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| 287 | } |
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| 288 | |
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| 289 | id1 = readarr[0]; |
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| 290 | id2 = readarr[1]; |
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| 291 | |
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| 292 | msg_cdbg("%s: id1 0x%x, id2 0x%x\n", __func__, id1, id2); |
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| 293 | |
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| 294 | if (id1 != flash->manufacture_id || id2 != flash->model_id) |
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| 295 | return 0; |
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| 296 | |
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| 297 | /* Print the status register to tell the |
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| 298 | * user about possible write protection. |
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| 299 | */ |
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| 300 | spi_prettyprint_status_register(flash); |
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| 301 | return 1; |
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| 302 | } |
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| 303 | |
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| 304 | uint8_t spi_read_status_register(struct flashctx *flash) |
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| 305 | { |
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| 306 | static const unsigned char cmd[JEDEC_RDSR_OUTSIZE] = { JEDEC_RDSR }; |
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| 307 | /* FIXME: No workarounds for driver/hardware bugs in generic code. */ |
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| 308 | unsigned char readarr[2]; /* JEDEC_RDSR_INSIZE=1 but wbsio needs 2 */ |
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| 309 | int ret; |
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| 310 | |
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| 311 | /* Read Status Register */ |
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| 312 | ret = spi_send_command(flash, sizeof(cmd), sizeof(readarr), cmd, |
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| 313 | readarr); |
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| 314 | if (ret) |
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| 315 | msg_cerr("RDSR failed!\n"); |
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| 316 | |
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| 317 | return readarr[0]; |
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| 318 | } |
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| 319 | |
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| 320 | /* Prettyprint the status register. Common definitions. */ |
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| 321 | void spi_prettyprint_status_register_welwip(uint8_t status) |
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| 322 | { |
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| 323 | msg_cdbg("Chip status register: Write Enable Latch (WEL) is " |
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| 324 | "%sset\n", (status & (1 << 1)) ? "" : "not "); |
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| 325 | msg_cdbg("Chip status register: Write In Progress (WIP/BUSY) is " |
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| 326 | "%sset\n", (status & (1 << 0)) ? "" : "not "); |
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| 327 | } |
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| 328 | |
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| 329 | /* Prettyprint the status register. Common definitions. */ |
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| 330 | void spi_prettyprint_status_register_bp3210(uint8_t status, int bp) |
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| 331 | { |
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| 332 | switch (bp) { |
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| 333 | /* Fall through. */ |
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| 334 | case 3: |
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| 335 | msg_cdbg("Chip status register: Bit 5 / Block Protect 3 (BP3) " |
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| 336 | "is %sset\n", (status & (1 << 5)) ? "" : "not "); |
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| 337 | case 2: |
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| 338 | msg_cdbg("Chip status register: Bit 4 / Block Protect 2 (BP2) " |
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| 339 | "is %sset\n", (status & (1 << 4)) ? "" : "not "); |
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| 340 | case 1: |
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| 341 | msg_cdbg("Chip status register: Bit 3 / Block Protect 1 (BP1) " |
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| 342 | "is %sset\n", (status & (1 << 3)) ? "" : "not "); |
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| 343 | case 0: |
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| 344 | msg_cdbg("Chip status register: Bit 2 / Block Protect 0 (BP0) " |
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| 345 | "is %sset\n", (status & (1 << 2)) ? "" : "not "); |
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| 346 | } |
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| 347 | } |
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| 348 | |
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| 349 | /* Prettyprint the status register. Unnamed bits. */ |
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| 350 | void spi_prettyprint_status_register_bit(uint8_t status, int bit) |
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| 351 | { |
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| 352 | msg_cdbg("Chip status register: Bit %i " |
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| 353 | "is %sset\n", bit, (status & (1 << bit)) ? "" : "not "); |
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| 354 | } |
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| 355 | |
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| 356 | static void spi_prettyprint_status_register_common(uint8_t status) |
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| 357 | { |
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| 358 | spi_prettyprint_status_register_bp3210(status, 3); |
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| 359 | spi_prettyprint_status_register_welwip(status); |
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| 360 | } |
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| 361 | |
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| 362 | /* Prettyprint the status register. Works for |
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| 363 | * ST M25P series |
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| 364 | * MX MX25L series |
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| 365 | */ |
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| 366 | void spi_prettyprint_status_register_st_m25p(uint8_t status) |
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| 367 | { |
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| 368 | msg_cdbg("Chip status register: Status Register Write Disable " |
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| 369 | "(SRWD) is %sset\n", (status & (1 << 7)) ? "" : "not "); |
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| 370 | msg_cdbg("Chip status register: Bit 6 is " |
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| 371 | "%sset\n", (status & (1 << 6)) ? "" : "not "); |
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| 372 | spi_prettyprint_status_register_common(status); |
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| 373 | } |
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| 374 | |
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| 375 | void spi_prettyprint_status_register_sst25(uint8_t status) |
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| 376 | { |
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| 377 | msg_cdbg("Chip status register: Block Protect Write Disable " |
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| 378 | "(BPL) is %sset\n", (status & (1 << 7)) ? "" : "not "); |
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| 379 | msg_cdbg("Chip status register: Auto Address Increment Programming " |
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| 380 | "(AAI) is %sset\n", (status & (1 << 6)) ? "" : "not "); |
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| 381 | spi_prettyprint_status_register_common(status); |
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| 382 | } |
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| 383 | |
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| 384 | /* Prettyprint the status register. Works for |
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| 385 | * SST 25VF016 |
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| 386 | */ |
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| 387 | void spi_prettyprint_status_register_sst25vf016(uint8_t status) |
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| 388 | { |
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| 389 | static const char *const bpt[] = { |
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| 390 | "none", |
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| 391 | "1F0000H-1FFFFFH", |
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| 392 | "1E0000H-1FFFFFH", |
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| 393 | "1C0000H-1FFFFFH", |
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| 394 | "180000H-1FFFFFH", |
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| 395 | "100000H-1FFFFFH", |
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| 396 | "all", "all" |
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| 397 | }; |
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| 398 | spi_prettyprint_status_register_sst25(status); |
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| 399 | msg_cdbg("Resulting block protection : %s\n", |
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| 400 | bpt[(status & 0x1c) >> 2]); |
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| 401 | } |
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| 402 | |
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| 403 | void spi_prettyprint_status_register_sst25vf040b(uint8_t status) |
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| 404 | { |
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| 405 | static const char *const bpt[] = { |
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| 406 | "none", |
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| 407 | "0x70000-0x7ffff", |
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| 408 | "0x60000-0x7ffff", |
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| 409 | "0x40000-0x7ffff", |
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| 410 | "all blocks", "all blocks", "all blocks", "all blocks" |
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| 411 | }; |
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| 412 | spi_prettyprint_status_register_sst25(status); |
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| 413 | msg_cdbg("Resulting block protection : %s\n", |
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| 414 | bpt[(status & 0x1c) >> 2]); |
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| 415 | } |
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| 416 | |
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| 417 | int spi_prettyprint_status_register(struct flashctx *flash) |
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| 418 | { |
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| 419 | uint8_t status; |
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| 420 | |
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| 421 | status = spi_read_status_register(flash); |
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| 422 | msg_cdbg("Chip status register is %02x\n", status); |
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| 423 | switch (flash->manufacture_id) { |
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| 424 | case ST_ID: |
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| 425 | if (((flash->model_id & 0xff00) == 0x2000) || |
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| 426 | ((flash->model_id & 0xff00) == 0x2500)) |
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| 427 | spi_prettyprint_status_register_st_m25p(status); |
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| 428 | break; |
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| 429 | case MACRONIX_ID: |
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| 430 | if ((flash->model_id & 0xff00) == 0x2000) |
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| 431 | spi_prettyprint_status_register_st_m25p(status); |
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| 432 | break; |
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| 433 | case SST_ID: |
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| 434 | switch (flash->model_id) { |
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| 435 | case 0x2541: |
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| 436 | spi_prettyprint_status_register_sst25vf016(status); |
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| 437 | break; |
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| 438 | case 0x8d: |
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| 439 | case 0x258d: |
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| 440 | spi_prettyprint_status_register_sst25vf040b(status); |
|---|
| 441 | break; |
|---|
| 442 | default: |
|---|
| 443 | spi_prettyprint_status_register_sst25(status); |
|---|
| 444 | break; |
|---|
| 445 | } |
|---|
| 446 | break; |
|---|
| 447 | } |
|---|
| 448 | return 0; |
|---|
| 449 | } |
|---|
| 450 | |
|---|
| 451 | int spi_chip_erase_60(struct flashctx *flash) |
|---|
| 452 | { |
|---|
| 453 | int result; |
|---|
| 454 | struct spi_command cmds[] = { |
|---|
| 455 | { |
|---|
| 456 | .writecnt = JEDEC_WREN_OUTSIZE, |
|---|
| 457 | .writearr = (const unsigned char[]){ JEDEC_WREN }, |
|---|
| 458 | .readcnt = 0, |
|---|
| 459 | .readarr = NULL, |
|---|
| 460 | }, { |
|---|
| 461 | .writecnt = JEDEC_CE_60_OUTSIZE, |
|---|
| 462 | .writearr = (const unsigned char[]){ JEDEC_CE_60 }, |
|---|
| 463 | .readcnt = 0, |
|---|
| 464 | .readarr = NULL, |
|---|
| 465 | }, { |
|---|
| 466 | .writecnt = 0, |
|---|
| 467 | .writearr = NULL, |
|---|
| 468 | .readcnt = 0, |
|---|
| 469 | .readarr = NULL, |
|---|
| 470 | }}; |
|---|
| 471 | |
|---|
| 472 | result = spi_send_multicommand(flash, cmds); |
|---|
| 473 | if (result) { |
|---|
| 474 | msg_cerr("%s failed during command execution\n", |
|---|
| 475 | __func__); |
|---|
| 476 | return result; |
|---|
| 477 | } |
|---|
| 478 | /* Wait until the Write-In-Progress bit is cleared. |
|---|
| 479 | * This usually takes 1-85 s, so wait in 1 s steps. |
|---|
| 480 | */ |
|---|
| 481 | /* FIXME: We assume spi_read_status_register will never fail. */ |
|---|
| 482 | while (spi_read_status_register(flash) & SPI_SR_WIP) |
|---|
| 483 | programmer_delay(1000 * 1000); |
|---|
| 484 | /* FIXME: Check the status register for errors. */ |
|---|
| 485 | return 0; |
|---|
| 486 | } |
|---|
| 487 | |
|---|
| 488 | int spi_chip_erase_c7(struct flashctx *flash) |
|---|
| 489 | { |
|---|
| 490 | int result; |
|---|
| 491 | struct spi_command cmds[] = { |
|---|
| 492 | { |
|---|
| 493 | .writecnt = JEDEC_WREN_OUTSIZE, |
|---|
| 494 | .writearr = (const unsigned char[]){ JEDEC_WREN }, |
|---|
| 495 | .readcnt = 0, |
|---|
| 496 | .readarr = NULL, |
|---|
| 497 | }, { |
|---|
| 498 | .writecnt = JEDEC_CE_C7_OUTSIZE, |
|---|
| 499 | .writearr = (const unsigned char[]){ JEDEC_CE_C7 }, |
|---|
| 500 | .readcnt = 0, |
|---|
| 501 | .readarr = NULL, |
|---|
| 502 | }, { |
|---|
| 503 | .writecnt = 0, |
|---|
| 504 | .writearr = NULL, |
|---|
| 505 | .readcnt = 0, |
|---|
| 506 | .readarr = NULL, |
|---|
| 507 | }}; |
|---|
| 508 | |
|---|
| 509 | result = spi_send_multicommand(flash, cmds); |
|---|
| 510 | if (result) { |
|---|
| 511 | msg_cerr("%s failed during command execution\n", __func__); |
|---|
| 512 | return result; |
|---|
| 513 | } |
|---|
| 514 | /* Wait until the Write-In-Progress bit is cleared. |
|---|
| 515 | * This usually takes 1-85 s, so wait in 1 s steps. |
|---|
| 516 | */ |
|---|
| 517 | /* FIXME: We assume spi_read_status_register will never fail. */ |
|---|
| 518 | while (spi_read_status_register(flash) & SPI_SR_WIP) |
|---|
| 519 | programmer_delay(1000 * 1000); |
|---|
| 520 | /* FIXME: Check the status register for errors. */ |
|---|
| 521 | return 0; |
|---|
| 522 | } |
|---|
| 523 | |
|---|
| 524 | int spi_block_erase_52(struct flashctx *flash, unsigned int addr, |
|---|
| 525 | unsigned int blocklen) |
|---|
| 526 | { |
|---|
| 527 | int result; |
|---|
| 528 | struct spi_command cmds[] = { |
|---|
| 529 | { |
|---|
| 530 | .writecnt = JEDEC_WREN_OUTSIZE, |
|---|
| 531 | .writearr = (const unsigned char[]){ JEDEC_WREN }, |
|---|
| 532 | .readcnt = 0, |
|---|
| 533 | .readarr = NULL, |
|---|
| 534 | }, { |
|---|
| 535 | .writecnt = JEDEC_BE_52_OUTSIZE, |
|---|
| 536 | .writearr = (const unsigned char[]){ |
|---|
| 537 | JEDEC_BE_52, |
|---|
| 538 | (addr >> 16) & 0xff, |
|---|
| 539 | (addr >> 8) & 0xff, |
|---|
| 540 | (addr & 0xff) |
|---|
| 541 | }, |
|---|
| 542 | .readcnt = 0, |
|---|
| 543 | .readarr = NULL, |
|---|
| 544 | }, { |
|---|
| 545 | .writecnt = 0, |
|---|
| 546 | .writearr = NULL, |
|---|
| 547 | .readcnt = 0, |
|---|
| 548 | .readarr = NULL, |
|---|
| 549 | }}; |
|---|
| 550 | |
|---|
| 551 | result = spi_send_multicommand(flash, cmds); |
|---|
| 552 | if (result) { |
|---|
| 553 | msg_cerr("%s failed during command execution at address 0x%x\n", |
|---|
| 554 | __func__, addr); |
|---|
| 555 | return result; |
|---|
| 556 | } |
|---|
| 557 | /* Wait until the Write-In-Progress bit is cleared. |
|---|
| 558 | * This usually takes 100-4000 ms, so wait in 100 ms steps. |
|---|
| 559 | */ |
|---|
| 560 | while (spi_read_status_register(flash) & SPI_SR_WIP) |
|---|
| 561 | programmer_delay(100 * 1000); |
|---|
| 562 | /* FIXME: Check the status register for errors. */ |
|---|
| 563 | return 0; |
|---|
| 564 | } |
|---|
| 565 | |
|---|
| 566 | /* Block size is usually |
|---|
| 567 | * 64k for Macronix |
|---|
| 568 | * 32k for SST |
|---|
| 569 | * 4-32k non-uniform for EON |
|---|
| 570 | */ |
|---|
| 571 | int spi_block_erase_d8(struct flashctx *flash, unsigned int addr, |
|---|
| 572 | unsigned int blocklen) |
|---|
| 573 | { |
|---|
| 574 | int result; |
|---|
| 575 | struct spi_command cmds[] = { |
|---|
| 576 | { |
|---|
| 577 | .writecnt = JEDEC_WREN_OUTSIZE, |
|---|
| 578 | .writearr = (const unsigned char[]){ JEDEC_WREN }, |
|---|
| 579 | .readcnt = 0, |
|---|
| 580 | .readarr = NULL, |
|---|
| 581 | }, { |
|---|
| 582 | .writecnt = JEDEC_BE_D8_OUTSIZE, |
|---|
| 583 | .writearr = (const unsigned char[]){ |
|---|
| 584 | JEDEC_BE_D8, |
|---|
| 585 | (addr >> 16) & 0xff, |
|---|
| 586 | (addr >> 8) & 0xff, |
|---|
| 587 | (addr & 0xff) |
|---|
| 588 | }, |
|---|
| 589 | .readcnt = 0, |
|---|
| 590 | .readarr = NULL, |
|---|
| 591 | }, { |
|---|
| 592 | .writecnt = 0, |
|---|
| 593 | .writearr = NULL, |
|---|
| 594 | .readcnt = 0, |
|---|
| 595 | .readarr = NULL, |
|---|
| 596 | }}; |
|---|
| 597 | |
|---|
| 598 | result = spi_send_multicommand(flash, cmds); |
|---|
| 599 | if (result) { |
|---|
| 600 | msg_cerr("%s failed during command execution at address 0x%x\n", |
|---|
| 601 | __func__, addr); |
|---|
| 602 | return result; |
|---|
| 603 | } |
|---|
| 604 | /* Wait until the Write-In-Progress bit is cleared. |
|---|
| 605 | * This usually takes 100-4000 ms, so wait in 100 ms steps. |
|---|
| 606 | */ |
|---|
| 607 | while (spi_read_status_register(flash) & SPI_SR_WIP) |
|---|
| 608 | programmer_delay(100 * 1000); |
|---|
| 609 | /* FIXME: Check the status register for errors. */ |
|---|
| 610 | return 0; |
|---|
| 611 | } |
|---|
| 612 | |
|---|
| 613 | /* Block size is usually |
|---|
| 614 | * 4k for PMC |
|---|
| 615 | */ |
|---|
| 616 | int spi_block_erase_d7(struct flashctx *flash, unsigned int addr, |
|---|
| 617 | unsigned int blocklen) |
|---|
| 618 | { |
|---|
| 619 | int result; |
|---|
| 620 | struct spi_command cmds[] = { |
|---|
| 621 | { |
|---|
| 622 | .writecnt = JEDEC_WREN_OUTSIZE, |
|---|
| 623 | .writearr = (const unsigned char[]){ JEDEC_WREN }, |
|---|
| 624 | .readcnt = 0, |
|---|
| 625 | .readarr = NULL, |
|---|
| 626 | }, { |
|---|
| 627 | .writecnt = JEDEC_BE_D7_OUTSIZE, |
|---|
| 628 | .writearr = (const unsigned char[]){ |
|---|
| 629 | JEDEC_BE_D7, |
|---|
| 630 | (addr >> 16) & 0xff, |
|---|
| 631 | (addr >> 8) & 0xff, |
|---|
| 632 | (addr & 0xff) |
|---|
| 633 | }, |
|---|
| 634 | .readcnt = 0, |
|---|
| 635 | .readarr = NULL, |
|---|
| 636 | }, { |
|---|
| 637 | .writecnt = 0, |
|---|
| 638 | .writearr = NULL, |
|---|
| 639 | .readcnt = 0, |
|---|
| 640 | .readarr = NULL, |
|---|
| 641 | }}; |
|---|
| 642 | |
|---|
| 643 | result = spi_send_multicommand(flash, cmds); |
|---|
| 644 | if (result) { |
|---|
| 645 | msg_cerr("%s failed during command execution at address 0x%x\n", |
|---|
| 646 | __func__, addr); |
|---|
| 647 | return result; |
|---|
| 648 | } |
|---|
| 649 | /* Wait until the Write-In-Progress bit is cleared. |
|---|
| 650 | * This usually takes 100-4000 ms, so wait in 100 ms steps. |
|---|
| 651 | */ |
|---|
| 652 | while (spi_read_status_register(flash) & SPI_SR_WIP) |
|---|
| 653 | programmer_delay(100 * 1000); |
|---|
| 654 | /* FIXME: Check the status register for errors. */ |
|---|
| 655 | return 0; |
|---|
| 656 | } |
|---|
| 657 | |
|---|
| 658 | /* Sector size is usually 4k, though Macronix eliteflash has 64k */ |
|---|
| 659 | int spi_block_erase_20(struct flashctx *flash, unsigned int addr, |
|---|
| 660 | unsigned int blocklen) |
|---|
| 661 | { |
|---|
| 662 | int result; |
|---|
| 663 | struct spi_command cmds[] = { |
|---|
| 664 | { |
|---|
| 665 | .writecnt = JEDEC_WREN_OUTSIZE, |
|---|
| 666 | .writearr = (const unsigned char[]){ JEDEC_WREN }, |
|---|
| 667 | .readcnt = 0, |
|---|
| 668 | .readarr = NULL, |
|---|
| 669 | }, { |
|---|
| 670 | .writecnt = JEDEC_SE_OUTSIZE, |
|---|
| 671 | .writearr = (const unsigned char[]){ |
|---|
| 672 | JEDEC_SE, |
|---|
| 673 | (addr >> 16) & 0xff, |
|---|
| 674 | (addr >> 8) & 0xff, |
|---|
| 675 | (addr & 0xff) |
|---|
| 676 | }, |
|---|
| 677 | .readcnt = 0, |
|---|
| 678 | .readarr = NULL, |
|---|
| 679 | }, { |
|---|
| 680 | .writecnt = 0, |
|---|
| 681 | .writearr = NULL, |
|---|
| 682 | .readcnt = 0, |
|---|
| 683 | .readarr = NULL, |
|---|
| 684 | }}; |
|---|
| 685 | |
|---|
| 686 | result = spi_send_multicommand(flash, cmds); |
|---|
| 687 | if (result) { |
|---|
| 688 | msg_cerr("%s failed during command execution at address 0x%x\n", |
|---|
| 689 | __func__, addr); |
|---|
| 690 | return result; |
|---|
| 691 | } |
|---|
| 692 | /* Wait until the Write-In-Progress bit is cleared. |
|---|
| 693 | * This usually takes 15-800 ms, so wait in 10 ms steps. |
|---|
| 694 | */ |
|---|
| 695 | while (spi_read_status_register(flash) & SPI_SR_WIP) |
|---|
| 696 | programmer_delay(10 * 1000); |
|---|
| 697 | /* FIXME: Check the status register for errors. */ |
|---|
| 698 | return 0; |
|---|
| 699 | } |
|---|
| 700 | |
|---|
| 701 | int spi_block_erase_60(struct flashctx *flash, unsigned int addr, |
|---|
| 702 | unsigned int blocklen) |
|---|
| 703 | { |
|---|
| 704 | if ((addr != 0) || (blocklen != flash->total_size * 1024)) { |
|---|
| 705 | msg_cerr("%s called with incorrect arguments\n", |
|---|
| 706 | __func__); |
|---|
| 707 | return -1; |
|---|
| 708 | } |
|---|
| 709 | return spi_chip_erase_60(flash); |
|---|
| 710 | } |
|---|
| 711 | |
|---|
| 712 | int spi_block_erase_c7(struct flashctx *flash, unsigned int addr, |
|---|
| 713 | unsigned int blocklen) |
|---|
| 714 | { |
|---|
| 715 | if ((addr != 0) || (blocklen != flash->total_size * 1024)) { |
|---|
| 716 | msg_cerr("%s called with incorrect arguments\n", |
|---|
| 717 | __func__); |
|---|
| 718 | return -1; |
|---|
| 719 | } |
|---|
| 720 | return spi_chip_erase_c7(flash); |
|---|
| 721 | } |
|---|
| 722 | |
|---|
| 723 | erasefunc_t *spi_get_erasefn_from_opcode(uint8_t opcode) |
|---|
| 724 | { |
|---|
| 725 | switch(opcode){ |
|---|
| 726 | case 0xff: |
|---|
| 727 | case 0x00: |
|---|
| 728 | /* Not specified, assuming "not supported". */ |
|---|
| 729 | return NULL; |
|---|
| 730 | case 0x20: |
|---|
| 731 | return &spi_block_erase_20; |
|---|
| 732 | case 0x52: |
|---|
| 733 | return &spi_block_erase_52; |
|---|
| 734 | case 0x60: |
|---|
| 735 | return &spi_block_erase_60; |
|---|
| 736 | case 0xc7: |
|---|
| 737 | return &spi_block_erase_c7; |
|---|
| 738 | case 0xd7: |
|---|
| 739 | return &spi_block_erase_d7; |
|---|
| 740 | case 0xd8: |
|---|
| 741 | return &spi_block_erase_d8; |
|---|
| 742 | default: |
|---|
| 743 | msg_cinfo("%s: unknown erase opcode (0x%02x). Please report " |
|---|
| 744 | "this at flashrom@flashrom.org\n", __func__, opcode); |
|---|
| 745 | return NULL; |
|---|
| 746 | } |
|---|
| 747 | } |
|---|
| 748 | |
|---|
| 749 | int spi_write_status_enable(struct flashctx *flash) |
|---|
| 750 | { |
|---|
| 751 | static const unsigned char cmd[JEDEC_EWSR_OUTSIZE] = { JEDEC_EWSR }; |
|---|
| 752 | int result; |
|---|
| 753 | |
|---|
| 754 | /* Send EWSR (Enable Write Status Register). */ |
|---|
| 755 | result = spi_send_command(flash, sizeof(cmd), JEDEC_EWSR_INSIZE, cmd, NULL); |
|---|
| 756 | |
|---|
| 757 | if (result) |
|---|
| 758 | msg_cerr("%s failed\n", __func__); |
|---|
| 759 | |
|---|
| 760 | return result; |
|---|
| 761 | } |
|---|
| 762 | |
|---|
| 763 | /* |
|---|
| 764 | * This is according the SST25VF016 datasheet, who knows it is more |
|---|
| 765 | * generic that this... |
|---|
| 766 | */ |
|---|
| 767 | static int spi_write_status_register_flag(struct flashctx *flash, int status, const unsigned char enable_opcode) |
|---|
| 768 | { |
|---|
| 769 | int result; |
|---|
| 770 | int i = 0; |
|---|
| 771 | /* |
|---|
| 772 | * WRSR requires either EWSR or WREN depending on chip type. |
|---|
| 773 | * The code below relies on the fact hat EWSR and WREN have the same |
|---|
| 774 | * INSIZE and OUTSIZE. |
|---|
| 775 | */ |
|---|
| 776 | struct spi_command cmds[] = { |
|---|
| 777 | { |
|---|
| 778 | .writecnt = JEDEC_WREN_OUTSIZE, |
|---|
| 779 | .writearr = (const unsigned char[]){ enable_opcode }, |
|---|
| 780 | .readcnt = 0, |
|---|
| 781 | .readarr = NULL, |
|---|
| 782 | }, { |
|---|
| 783 | .writecnt = JEDEC_WRSR_OUTSIZE, |
|---|
| 784 | .writearr = (const unsigned char[]){ JEDEC_WRSR, (unsigned char) status }, |
|---|
| 785 | .readcnt = 0, |
|---|
| 786 | .readarr = NULL, |
|---|
| 787 | }, { |
|---|
| 788 | .writecnt = 0, |
|---|
| 789 | .writearr = NULL, |
|---|
| 790 | .readcnt = 0, |
|---|
| 791 | .readarr = NULL, |
|---|
| 792 | }}; |
|---|
| 793 | |
|---|
| 794 | result = spi_send_multicommand(flash, cmds); |
|---|
| 795 | if (result) { |
|---|
| 796 | msg_cerr("%s failed during command execution\n", __func__); |
|---|
| 797 | /* No point in waiting for the command to complete if execution |
|---|
| 798 | * failed. |
|---|
| 799 | */ |
|---|
| 800 | return result; |
|---|
| 801 | } |
|---|
| 802 | /* WRSR performs a self-timed erase before the changes take effect. |
|---|
| 803 | * This may take 50-85 ms in most cases, and some chips apparently |
|---|
| 804 | * allow running RDSR only once. Therefore pick an initial delay of |
|---|
| 805 | * 100 ms, then wait in 10 ms steps until a total of 5 s have elapsed. |
|---|
| 806 | */ |
|---|
| 807 | programmer_delay(100 * 1000); |
|---|
| 808 | while (spi_read_status_register(flash) & SPI_SR_WIP) { |
|---|
| 809 | if (++i > 490) { |
|---|
| 810 | msg_cerr("Error: WIP bit after WRSR never cleared\n"); |
|---|
| 811 | return TIMEOUT_ERROR; |
|---|
| 812 | } |
|---|
| 813 | programmer_delay(10 * 1000); |
|---|
| 814 | } |
|---|
| 815 | return 0; |
|---|
| 816 | } |
|---|
| 817 | |
|---|
| 818 | int spi_write_status_register(struct flashctx *flash, int status) |
|---|
| 819 | { |
|---|
| 820 | int feature_bits = flash->feature_bits; |
|---|
| 821 | int ret = 1; |
|---|
| 822 | |
|---|
| 823 | if (!(feature_bits & (FEATURE_WRSR_WREN | FEATURE_WRSR_EWSR))) { |
|---|
| 824 | msg_cdbg("Missing status register write definition, assuming " |
|---|
| 825 | "EWSR is needed\n"); |
|---|
| 826 | feature_bits |= FEATURE_WRSR_EWSR; |
|---|
| 827 | } |
|---|
| 828 | if (feature_bits & FEATURE_WRSR_WREN) |
|---|
| 829 | ret = spi_write_status_register_flag(flash, status, JEDEC_WREN); |
|---|
| 830 | if (ret && (feature_bits & FEATURE_WRSR_EWSR)) |
|---|
| 831 | ret = spi_write_status_register_flag(flash, status, JEDEC_EWSR); |
|---|
| 832 | return ret; |
|---|
| 833 | } |
|---|
| 834 | |
|---|
| 835 | int spi_byte_program(struct flashctx *flash, unsigned int addr, |
|---|
| 836 | uint8_t databyte) |
|---|
| 837 | { |
|---|
| 838 | int result; |
|---|
| 839 | struct spi_command cmds[] = { |
|---|
| 840 | { |
|---|
| 841 | .writecnt = JEDEC_WREN_OUTSIZE, |
|---|
| 842 | .writearr = (const unsigned char[]){ JEDEC_WREN }, |
|---|
| 843 | .readcnt = 0, |
|---|
| 844 | .readarr = NULL, |
|---|
| 845 | }, { |
|---|
| 846 | .writecnt = JEDEC_BYTE_PROGRAM_OUTSIZE, |
|---|
| 847 | .writearr = (const unsigned char[]){ |
|---|
| 848 | JEDEC_BYTE_PROGRAM, |
|---|
| 849 | (addr >> 16) & 0xff, |
|---|
| 850 | (addr >> 8) & 0xff, |
|---|
| 851 | (addr & 0xff), |
|---|
| 852 | databyte |
|---|
| 853 | }, |
|---|
| 854 | .readcnt = 0, |
|---|
| 855 | .readarr = NULL, |
|---|
| 856 | }, { |
|---|
| 857 | .writecnt = 0, |
|---|
| 858 | .writearr = NULL, |
|---|
| 859 | .readcnt = 0, |
|---|
| 860 | .readarr = NULL, |
|---|
| 861 | }}; |
|---|
| 862 | |
|---|
| 863 | result = spi_send_multicommand(flash, cmds); |
|---|
| 864 | if (result) { |
|---|
| 865 | msg_cerr("%s failed during command execution at address 0x%x\n", |
|---|
| 866 | __func__, addr); |
|---|
| 867 | } |
|---|
| 868 | return result; |
|---|
| 869 | } |
|---|
| 870 | |
|---|
| 871 | int spi_nbyte_program(struct flashctx *flash, unsigned int addr, uint8_t *bytes, |
|---|
| 872 | unsigned int len) |
|---|
| 873 | { |
|---|
| 874 | int result; |
|---|
| 875 | /* FIXME: Switch to malloc based on len unless that kills speed. */ |
|---|
| 876 | unsigned char cmd[JEDEC_BYTE_PROGRAM_OUTSIZE - 1 + 256] = { |
|---|
| 877 | JEDEC_BYTE_PROGRAM, |
|---|
| 878 | (addr >> 16) & 0xff, |
|---|
| 879 | (addr >> 8) & 0xff, |
|---|
| 880 | (addr >> 0) & 0xff, |
|---|
| 881 | }; |
|---|
| 882 | struct spi_command cmds[] = { |
|---|
| 883 | { |
|---|
| 884 | .writecnt = JEDEC_WREN_OUTSIZE, |
|---|
| 885 | .writearr = (const unsigned char[]){ JEDEC_WREN }, |
|---|
| 886 | .readcnt = 0, |
|---|
| 887 | .readarr = NULL, |
|---|
| 888 | }, { |
|---|
| 889 | .writecnt = JEDEC_BYTE_PROGRAM_OUTSIZE - 1 + len, |
|---|
| 890 | .writearr = cmd, |
|---|
| 891 | .readcnt = 0, |
|---|
| 892 | .readarr = NULL, |
|---|
| 893 | }, { |
|---|
| 894 | .writecnt = 0, |
|---|
| 895 | .writearr = NULL, |
|---|
| 896 | .readcnt = 0, |
|---|
| 897 | .readarr = NULL, |
|---|
| 898 | }}; |
|---|
| 899 | |
|---|
| 900 | if (!len) { |
|---|
| 901 | msg_cerr("%s called for zero-length write\n", __func__); |
|---|
| 902 | return 1; |
|---|
| 903 | } |
|---|
| 904 | if (len > 256) { |
|---|
| 905 | msg_cerr("%s called for too long a write\n", __func__); |
|---|
| 906 | return 1; |
|---|
| 907 | } |
|---|
| 908 | |
|---|
| 909 | memcpy(&cmd[4], bytes, len); |
|---|
| 910 | |
|---|
| 911 | result = spi_send_multicommand(flash, cmds); |
|---|
| 912 | if (result) { |
|---|
| 913 | msg_cerr("%s failed during command execution at address 0x%x\n", |
|---|
| 914 | __func__, addr); |
|---|
| 915 | } |
|---|
| 916 | return result; |
|---|
| 917 | } |
|---|
| 918 | |
|---|
| 919 | /* A generic brute-force block protection disable works like this: |
|---|
| 920 | * Write 0x00 to the status register. Check if any locks are still set (that |
|---|
| 921 | * part is chip specific). Repeat once. |
|---|
| 922 | */ |
|---|
| 923 | int spi_disable_blockprotect(struct flashctx *flash) |
|---|
| 924 | { |
|---|
| 925 | uint8_t status; |
|---|
| 926 | int result; |
|---|
| 927 | |
|---|
| 928 | status = spi_read_status_register(flash); |
|---|
| 929 | /* If block protection is disabled, stop here. */ |
|---|
| 930 | if ((status & 0x3c) == 0) |
|---|
| 931 | return 0; |
|---|
| 932 | |
|---|
| 933 | msg_cdbg("Some block protection in effect, disabling\n"); |
|---|
| 934 | result = spi_write_status_register(flash, status & ~0x3c); |
|---|
| 935 | if (result) { |
|---|
| 936 | msg_cerr("spi_write_status_register failed\n"); |
|---|
| 937 | return result; |
|---|
| 938 | } |
|---|
| 939 | status = spi_read_status_register(flash); |
|---|
| 940 | if ((status & 0x3c) != 0) { |
|---|
| 941 | msg_cerr("Block protection could not be disabled!\n"); |
|---|
| 942 | return 1; |
|---|
| 943 | } |
|---|
| 944 | return 0; |
|---|
| 945 | } |
|---|
| 946 | |
|---|
| 947 | int spi_nbyte_read(struct flashctx *flash, unsigned int address, uint8_t *bytes, |
|---|
| 948 | unsigned int len) |
|---|
| 949 | { |
|---|
| 950 | const unsigned char cmd[JEDEC_READ_OUTSIZE] = { |
|---|
| 951 | JEDEC_READ, |
|---|
| 952 | (address >> 16) & 0xff, |
|---|
| 953 | (address >> 8) & 0xff, |
|---|
| 954 | (address >> 0) & 0xff, |
|---|
| 955 | }; |
|---|
| 956 | |
|---|
| 957 | /* Send Read */ |
|---|
| 958 | return spi_send_command(flash, sizeof(cmd), len, cmd, bytes); |
|---|
| 959 | } |
|---|
| 960 | |
|---|
| 961 | /* |
|---|
| 962 | * Read a part of the flash chip. |
|---|
| 963 | * FIXME: Use the chunk code from Michael Karcher instead. |
|---|
| 964 | * Each page is read separately in chunks with a maximum size of chunksize. |
|---|
| 965 | */ |
|---|
| 966 | int spi_read_chunked(struct flashctx *flash, uint8_t *buf, unsigned int start, |
|---|
| 967 | unsigned int len, unsigned int chunksize) |
|---|
| 968 | { |
|---|
| 969 | int rc = 0; |
|---|
| 970 | unsigned int i, j, starthere, lenhere, toread; |
|---|
| 971 | unsigned int page_size = flash->page_size; |
|---|
| 972 | |
|---|
| 973 | /* Warning: This loop has a very unusual condition and body. |
|---|
| 974 | * The loop needs to go through each page with at least one affected |
|---|
| 975 | * byte. The lowest page number is (start / page_size) since that |
|---|
| 976 | * division rounds down. The highest page number we want is the page |
|---|
| 977 | * where the last byte of the range lives. That last byte has the |
|---|
| 978 | * address (start + len - 1), thus the highest page number is |
|---|
| 979 | * (start + len - 1) / page_size. Since we want to include that last |
|---|
| 980 | * page as well, the loop condition uses <=. |
|---|
| 981 | */ |
|---|
| 982 | for (i = start / page_size; i <= (start + len - 1) / page_size; i++) { |
|---|
| 983 | /* Byte position of the first byte in the range in this page. */ |
|---|
| 984 | /* starthere is an offset to the base address of the chip. */ |
|---|
| 985 | starthere = max(start, i * page_size); |
|---|
| 986 | /* Length of bytes in the range in this page. */ |
|---|
| 987 | lenhere = min(start + len, (i + 1) * page_size) - starthere; |
|---|
| 988 | for (j = 0; j < lenhere; j += chunksize) { |
|---|
| 989 | toread = min(chunksize, lenhere - j); |
|---|
| 990 | rc = spi_nbyte_read(flash, starthere + j, buf + starthere - start + j, toread); |
|---|
| 991 | if (rc) |
|---|
| 992 | break; |
|---|
| 993 | } |
|---|
| 994 | if (rc) |
|---|
| 995 | break; |
|---|
| 996 | } |
|---|
| 997 | |
|---|
| 998 | return rc; |
|---|
| 999 | } |
|---|
| 1000 | |
|---|
| 1001 | /* |
|---|
| 1002 | * Write a part of the flash chip. |
|---|
| 1003 | * FIXME: Use the chunk code from Michael Karcher instead. |
|---|
| 1004 | * Each page is written separately in chunks with a maximum size of chunksize. |
|---|
| 1005 | */ |
|---|
| 1006 | int spi_write_chunked(struct flashctx *flash, uint8_t *buf, unsigned int start, |
|---|
| 1007 | unsigned int len, unsigned int chunksize) |
|---|
| 1008 | { |
|---|
| 1009 | int rc = 0; |
|---|
| 1010 | unsigned int i, j, starthere, lenhere, towrite; |
|---|
| 1011 | /* FIXME: page_size is the wrong variable. We need max_writechunk_size |
|---|
| 1012 | * in struct flashctx to do this properly. All chips using |
|---|
| 1013 | * spi_chip_write_256 have page_size set to max_writechunk_size, so |
|---|
| 1014 | * we're OK for now. |
|---|
| 1015 | */ |
|---|
| 1016 | unsigned int page_size = flash->page_size; |
|---|
| 1017 | |
|---|
| 1018 | /* Warning: This loop has a very unusual condition and body. |
|---|
| 1019 | * The loop needs to go through each page with at least one affected |
|---|
| 1020 | * byte. The lowest page number is (start / page_size) since that |
|---|
| 1021 | * division rounds down. The highest page number we want is the page |
|---|
| 1022 | * where the last byte of the range lives. That last byte has the |
|---|
| 1023 | * address (start + len - 1), thus the highest page number is |
|---|
| 1024 | * (start + len - 1) / page_size. Since we want to include that last |
|---|
| 1025 | * page as well, the loop condition uses <=. |
|---|
| 1026 | */ |
|---|
| 1027 | for (i = start / page_size; i <= (start + len - 1) / page_size; i++) { |
|---|
| 1028 | /* Byte position of the first byte in the range in this page. */ |
|---|
| 1029 | /* starthere is an offset to the base address of the chip. */ |
|---|
| 1030 | starthere = max(start, i * page_size); |
|---|
| 1031 | /* Length of bytes in the range in this page. */ |
|---|
| 1032 | lenhere = min(start + len, (i + 1) * page_size) - starthere; |
|---|
| 1033 | for (j = 0; j < lenhere; j += chunksize) { |
|---|
| 1034 | towrite = min(chunksize, lenhere - j); |
|---|
| 1035 | rc = spi_nbyte_program(flash, starthere + j, buf + starthere - start + j, towrite); |
|---|
| 1036 | if (rc) |
|---|
| 1037 | break; |
|---|
| 1038 | while (spi_read_status_register(flash) & SPI_SR_WIP) |
|---|
| 1039 | programmer_delay(10); |
|---|
| 1040 | } |
|---|
| 1041 | if (rc) |
|---|
| 1042 | break; |
|---|
| 1043 | } |
|---|
| 1044 | |
|---|
| 1045 | return rc; |
|---|
| 1046 | } |
|---|
| 1047 | |
|---|
| 1048 | /* |
|---|
| 1049 | * Program chip using byte programming. (SLOW!) |
|---|
| 1050 | * This is for chips which can only handle one byte writes |
|---|
| 1051 | * and for chips where memory mapped programming is impossible |
|---|
| 1052 | * (e.g. due to size constraints in IT87* for over 512 kB) |
|---|
| 1053 | */ |
|---|
| 1054 | /* real chunksize is 1, logical chunksize is 1 */ |
|---|
| 1055 | int spi_chip_write_1(struct flashctx *flash, uint8_t *buf, unsigned int start, |
|---|
| 1056 | unsigned int len) |
|---|
| 1057 | { |
|---|
| 1058 | unsigned int i; |
|---|
| 1059 | int result = 0; |
|---|
| 1060 | |
|---|
| 1061 | for (i = start; i < start + len; i++) { |
|---|
| 1062 | result = spi_byte_program(flash, i, buf[i - start]); |
|---|
| 1063 | if (result) |
|---|
| 1064 | return 1; |
|---|
| 1065 | while (spi_read_status_register(flash) & SPI_SR_WIP) |
|---|
| 1066 | programmer_delay(10); |
|---|
| 1067 | } |
|---|
| 1068 | |
|---|
| 1069 | return 0; |
|---|
| 1070 | } |
|---|
| 1071 | |
|---|
| 1072 | int spi_aai_write(struct flashctx *flash, uint8_t *buf, unsigned int start, |
|---|
| 1073 | unsigned int len) |
|---|
| 1074 | { |
|---|
| 1075 | uint32_t pos = start; |
|---|
| 1076 | int result; |
|---|
| 1077 | unsigned char cmd[JEDEC_AAI_WORD_PROGRAM_CONT_OUTSIZE] = { |
|---|
| 1078 | JEDEC_AAI_WORD_PROGRAM, |
|---|
| 1079 | }; |
|---|
| 1080 | struct spi_command cmds[] = { |
|---|
| 1081 | { |
|---|
| 1082 | .writecnt = JEDEC_WREN_OUTSIZE, |
|---|
| 1083 | .writearr = (const unsigned char[]){ JEDEC_WREN }, |
|---|
| 1084 | .readcnt = 0, |
|---|
| 1085 | .readarr = NULL, |
|---|
| 1086 | }, { |
|---|
| 1087 | .writecnt = JEDEC_AAI_WORD_PROGRAM_OUTSIZE, |
|---|
| 1088 | .writearr = (const unsigned char[]){ |
|---|
| 1089 | JEDEC_AAI_WORD_PROGRAM, |
|---|
| 1090 | (start >> 16) & 0xff, |
|---|
| 1091 | (start >> 8) & 0xff, |
|---|
| 1092 | (start & 0xff), |
|---|
| 1093 | buf[0], |
|---|
| 1094 | buf[1] |
|---|
| 1095 | }, |
|---|
| 1096 | .readcnt = 0, |
|---|
| 1097 | .readarr = NULL, |
|---|
| 1098 | }, { |
|---|
| 1099 | .writecnt = 0, |
|---|
| 1100 | .writearr = NULL, |
|---|
| 1101 | .readcnt = 0, |
|---|
| 1102 | .readarr = NULL, |
|---|
| 1103 | }}; |
|---|
| 1104 | |
|---|
| 1105 | switch (flash->pgm->spi.type) { |
|---|
| 1106 | #if CONFIG_INTERNAL == 1 |
|---|
| 1107 | #if defined(__i386__) || defined(__x86_64__) |
|---|
| 1108 | case SPI_CONTROLLER_IT87XX: |
|---|
| 1109 | case SPI_CONTROLLER_WBSIO: |
|---|
| 1110 | msg_perr("%s: impossible with this SPI controller," |
|---|
| 1111 | " degrading to byte program\n", __func__); |
|---|
| 1112 | return spi_chip_write_1(flash, buf, start, len); |
|---|
| 1113 | #endif |
|---|
| 1114 | #endif |
|---|
| 1115 | default: |
|---|
| 1116 | break; |
|---|
| 1117 | } |
|---|
| 1118 | |
|---|
| 1119 | /* The even start address and even length requirements can be either |
|---|
| 1120 | * honored outside this function, or we can call spi_byte_program |
|---|
| 1121 | * for the first and/or last byte and use AAI for the rest. |
|---|
| 1122 | * FIXME: Move this to generic code. |
|---|
| 1123 | */ |
|---|
| 1124 | /* The data sheet requires a start address with the low bit cleared. */ |
|---|
| 1125 | if (start % 2) { |
|---|
| 1126 | msg_cerr("%s: start address not even! Please report a bug at " |
|---|
| 1127 | "flashrom@flashrom.org\n", __func__); |
|---|
| 1128 | if (spi_chip_write_1(flash, buf, start, start % 2)) |
|---|
| 1129 | return SPI_GENERIC_ERROR; |
|---|
| 1130 | pos += start % 2; |
|---|
| 1131 | cmds[1].writearr = (const unsigned char[]){ |
|---|
| 1132 | JEDEC_AAI_WORD_PROGRAM, |
|---|
| 1133 | (pos >> 16) & 0xff, |
|---|
| 1134 | (pos >> 8) & 0xff, |
|---|
| 1135 | (pos & 0xff), |
|---|
| 1136 | buf[pos - start], |
|---|
| 1137 | buf[pos - start + 1] |
|---|
| 1138 | }; |
|---|
| 1139 | /* Do not return an error for now. */ |
|---|
| 1140 | //return SPI_GENERIC_ERROR; |
|---|
| 1141 | } |
|---|
| 1142 | /* The data sheet requires total AAI write length to be even. */ |
|---|
| 1143 | if (len % 2) { |
|---|
| 1144 | msg_cerr("%s: total write length not even! Please report a " |
|---|
| 1145 | "bug at flashrom@flashrom.org\n", __func__); |
|---|
| 1146 | /* Do not return an error for now. */ |
|---|
| 1147 | //return SPI_GENERIC_ERROR; |
|---|
| 1148 | } |
|---|
| 1149 | |
|---|
| 1150 | |
|---|
| 1151 | result = spi_send_multicommand(flash, cmds); |
|---|
| 1152 | if (result) { |
|---|
| 1153 | msg_cerr("%s failed during start command execution\n", |
|---|
| 1154 | __func__); |
|---|
| 1155 | /* FIXME: Should we send WRDI here as well to make sure the chip |
|---|
| 1156 | * is not in AAI mode? |
|---|
| 1157 | */ |
|---|
| 1158 | return result; |
|---|
| 1159 | } |
|---|
| 1160 | while (spi_read_status_register(flash) & SPI_SR_WIP) |
|---|
| 1161 | programmer_delay(10); |
|---|
| 1162 | |
|---|
| 1163 | /* We already wrote 2 bytes in the multicommand step. */ |
|---|
| 1164 | pos += 2; |
|---|
| 1165 | |
|---|
| 1166 | /* Are there at least two more bytes to write? */ |
|---|
| 1167 | while (pos < start + len - 1) { |
|---|
| 1168 | cmd[1] = buf[pos++ - start]; |
|---|
| 1169 | cmd[2] = buf[pos++ - start]; |
|---|
| 1170 | spi_send_command(flash, JEDEC_AAI_WORD_PROGRAM_CONT_OUTSIZE, 0, |
|---|
| 1171 | cmd, NULL); |
|---|
| 1172 | while (spi_read_status_register(flash) & SPI_SR_WIP) |
|---|
| 1173 | programmer_delay(10); |
|---|
| 1174 | } |
|---|
| 1175 | |
|---|
| 1176 | /* Use WRDI to exit AAI mode. This needs to be done before issuing any |
|---|
| 1177 | * other non-AAI command. |
|---|
| 1178 | */ |
|---|
| 1179 | spi_write_disable(flash); |
|---|
| 1180 | |
|---|
| 1181 | /* Write remaining byte (if any). */ |
|---|
| 1182 | if (pos < start + len) { |
|---|
| 1183 | if (spi_chip_write_1(flash, buf + pos - start, pos, pos % 2)) |
|---|
| 1184 | return SPI_GENERIC_ERROR; |
|---|
| 1185 | pos += pos % 2; |
|---|
| 1186 | } |
|---|
| 1187 | |
|---|
| 1188 | return 0; |
|---|
| 1189 | } |
|---|