Changeset 1420

Timestamp:

08/26/11 00:44:11 (9 months ago)

Author:

uwe

Message:

Add support for the Sharp LH28F008BJT-BTLZ1 chip.

Tested by Mattias Mattsson <vitplister@…> on a PowerPC box.

Signed-off-by: Mattias Mattsson <vitplister@…>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@…>
Acked-by: Uwe Hermann <uwe@…>

Location:

trunk

Files:

• 82802ab.c (modified) (1 diff)
• chipdrivers.h (modified) (1 diff)
• flashchips.c (modified) (1 diff)

trunk/82802ab.c

@@ -209 +209 @@
         return 0;
 }
+
+int unlock_lh28f008bjt(struct flashchip *flash)
+{
+        chipaddr bios = flash->virtual_memory;
+        uint8_t mcfg, bcfg;
+        uint8_t need_unlock = 0, can_unlock = 0;
+        int i;
+
+        /* Wait if chip is busy */
+        wait_82802ab(flash);
+
+        /* Read identifier codes */
+        chip_writeb(0x90, bios);
+
+        /* Read master lock-bit */
+        mcfg = chip_readb(bios + 0x3);
+        msg_cdbg("master lock is ");
+        if (mcfg) {
+                msg_cdbg("locked!\n");
+        } else {
+                msg_cdbg("unlocked!\n");
+                can_unlock = 1;
+        }
+
+        /* Read block lock-bits, 8 * 8 KB + 15 * 64 KB */
+        for (i = 0; i < flash->total_size * 1024;
+             i += (i >= (64 * 1024) ? 64 * 1024 : 8 * 1024)) {
+                bcfg = chip_readb(bios + i + 2); /* read block lock config */
+                msg_cdbg("block lock at %06x is %slocked!\n", i,
+                         bcfg ? "" : "un");
+                if (bcfg)
+                        need_unlock = 1;
+        }
+
+        /* Reset chip */
+        chip_writeb(0xFF, bios);
+
+        /* Unlock: clear block lock-bits, if needed */
+        if (can_unlock && need_unlock) {
+                msg_cdbg("Unlock: ");
+                chip_writeb(0x60, bios);
+                chip_writeb(0xD0, bios);
+                chip_writeb(0xFF, bios);
+                wait_82802ab(flash);
+                msg_cdbg("Done!\n");
+        }
+
+        /* Error: master locked or a block is locked */
+        if (!can_unlock && need_unlock) {
+                msg_cerr("At least one block is locked and lockdown is active!\n");
+                return -1;
+        }
+
+        return 0;
+}

trunk/chipdrivers.h

@@ -86 +86 @@
 int unlock_82802ab(struct flashchip *flash);
 int unlock_28f004s5(struct flashchip *flash);
+int unlock_lh28f008bjt(struct flashchip *flash);
 
 /* jedec.c */

trunk/flashchips.c

@@ -5380 +5380 @@
         {
                 .vendor         = "Sharp",
+                .name           = "LH28F008BJT-BTLZ1",
+                .bustype        = BUS_PARALLEL,
+                .manufacture_id = SHARP_ID,
+                .model_id       = SHARP_LH28F008BJxxPB,
+                .total_size     = 1024,
+                .page_size      = 64 * 1024,
+                .tested         = TEST_OK_PREW,
+                .probe          = probe_82802ab,
+                .probe_timing   = TIMING_ZERO,
+                .block_erasers  =
+                {
+                        {
+                                .eraseblocks = {
+                                        {8 * 1024, 8},
+                                        {64 * 1024, 15}
+                                 },
+                                .block_erase = erase_block_82802ab,
+                        }, {
+                                .eraseblocks = { {1024 * 1024, 1} },
+                                .block_erase = erase_sector_49lfxxxc,
+                        }
+                },
+                .unlock         = unlock_lh28f008bjt,
+                .write          = write_82802ab,
+                .read           = read_memmapped,
+                .voltage        = {2700, 3600},
+        },
+
+        {
+                .vendor         = "Sharp",
                 .name           = "LHF00L04",
                 .bustype        = BUS_FWH, /* A/A Mux */