[flashrom] Migrate towards common JEDEC functions (2nd iteration)
Michael Karcher
flashrom at mkarcher.dialup.fu-berlin.de
Fri Nov 27 01:00:50 CET 2009
Use common jedec functionality where appropriate. The deleted function
in en29f002a.c is reintroduced as write_by_byte_jedec in jedec.c as it
contains no chip-specific instructions. It is not yet used in other
chip drivers, as key addresses (0x2AAA/0x5555) are often specified with
less bits. After crosschecking datasheets, most of the fixmes can
probably be resolved as indicated in them, causing significant code
reduction.
The common JEDEC code for bytewise programming does not program 0xFF at all.
The chips that had a dedicated bytewise flash function which has been
changed to write_jedec_1 thus changed flashing behaviour and the
"write" test flag has been removed. This applies to:
AMD Am29F002BB/Am29F002NBB
AMD Am29F002BT/Am29F002NBT (TEST_OK_PREW before)
AMIC A29002B
AMIC A29002T (TEST_OK_PREW before)
EON EN29F002(A)(N)B
EON EN29F002(A)(N)T (TEST_OK_PREW before)
Macronix MX29F001B (TEST_OK_PREW before)
Macronix MX29F001T (TEST_OK_PREW before)
Macronix MX29F002B
Macronix MX29F002T (TEST_OK_PREW before)
Macronix MX29LV040
Similar analysis should be performed for the read id stuff.
Signed-off-by: Michael Karcher <flashrom at mkarcher.dialup.fu-berlin.de>
Index: flash.h
===================================================================
--- flash.h (Revision 784)
+++ flash.h (Arbeitskopie)
@@ -653,6 +653,7 @@
int probe_jedec(struct flashchip *flash);
int erase_chip_jedec(struct flashchip *flash);
int write_jedec(struct flashchip *flash, uint8_t *buf);
+int write_jedec_1(struct flashchip *flash, uint8_t *buf);
int erase_sector_jedec(struct flashchip *flash, unsigned int page, unsigned int pagesize);
int erase_block_jedec(struct flashchip *flash, unsigned int page, unsigned int blocksize);
int write_sector_jedec(chipaddr bios, uint8_t *src,
Index: en29f002a.c
===================================================================
--- en29f002a.c (Revision 784)
+++ en29f002a.c (Arbeitskopie)
@@ -87,39 +87,3 @@
return 0;
}
-
-/* The EN29F002 chip needs repeated single byte writing, no block writing. */
-int write_en29f002a(struct flashchip *flash, uint8_t *buf)
-{
- int i;
- int total_size = flash->total_size * 1024;
- chipaddr bios = flash->virtual_memory;
- chipaddr dst = bios;
-
- //chip_writeb(0xF0, bios);
- programmer_delay(10);
- if (erase_chip_jedec(flash)) {
- fprintf(stderr, "ERASE FAILED!\n");
- return -1;
- }
-
- printf("Programming page: ");
- for (i = 0; i < total_size; i++) {
- /* write to the sector */
- if ((i & 0xfff) == 0)
- printf("address: 0x%08lx", (unsigned long)i);
- chip_writeb(0xAA, bios + 0x5555);
- chip_writeb(0x55, bios + 0x2AAA);
- chip_writeb(0xA0, bios + 0x5555);
- chip_writeb(*buf++, dst++);
-
- /* wait for Toggle bit ready */
- toggle_ready_jedec(dst);
-
- if ((i & 0xfff) == 0)
- printf("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b");
- }
-
- printf("\n");
- return 0;
-}
Index: jedec.c
===================================================================
--- jedec.c (Revision 784)
+++ jedec.c (Arbeitskopie)
@@ -353,3 +353,30 @@
return failed;
}
+
+int write_jedec_1(struct flashchip *flash, uint8_t * buf)
+{
+ int i;
+ chipaddr bios = flash->virtual_memory;
+ chipaddr dst = bios;
+
+ programmer_delay(10);
+ if (erase_flash(flash)) {
+ fprintf(stderr, "ERASE FAILED!\n");
+ return -1;
+ }
+
+ printf("Programming page: ");
+ for (i = 0; i < flash->total_size; i++) {
+ if ((i & 0x3) == 0)
+ printf("address: 0x%08lx", (unsigned long)i * 1024);
+
+ write_sector_jedec(bios, buf + i * 1024, dst + i * 1024, 1024);
+
+ if ((i & 0x3) == 0)
+ printf("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b");
+ }
+
+ printf("\n");
+ return 0;
+}
Index: pm29f002.c
===================================================================
--- pm29f002.c (Revision 784)
+++ pm29f002.c (Arbeitskopie)
@@ -20,18 +20,20 @@
#include "flash.h"
+/* if write_sector_jedec is used,
+ this is write_jedec_1 */
int write_pm29f002(struct flashchip *flash, uint8_t *buf)
{
int i, total_size = flash->total_size * 1024;
chipaddr bios = flash->virtual_memory;
chipaddr dst = bios;
- /* Pm29F002T/B use the same erase method... */
- if (erase_29f040b(flash)) {
+ if (erase_flash(flash)) {
fprintf(stderr, "ERASE FAILED!\n");
return -1;
}
+ /* FIXME: use write_sector_jedec? */
printf("Programming page: ");
for (i = 0; i < total_size; i++) {
if ((i & 0xfff) == 0)
Index: flashchips.c
===================================================================
--- flashchips.c (Revision 784)
+++ flashchips.c (Arbeitskopie)
@@ -81,7 +81,7 @@
.probe = probe_jedec,
.probe_timing = TIMING_ZERO,
.erase = erase_chip_jedec,
- .write = write_en29f002a,
+ .write = write_jedec_1,
.read = read_memmapped,
},
@@ -93,11 +93,11 @@
.model_id = AM_29F002BT,
.total_size = 256,
.page_size = 256,
- .tested = TEST_OK_PREW,
+ .tested = TEST_OK_PRE,
.probe = probe_jedec,
.probe_timing = TIMING_ZERO,
.erase = erase_chip_jedec,
- .write = write_en29f002a,
+ .write = write_jedec_1,
.read = read_memmapped,
},
@@ -739,7 +739,7 @@
.probe = probe_29f002,
.probe_timing = TIMING_IGNORED, /* routine don't use probe_timing (mx29f002.c) */
.erase = erase_29f002,
- .write = write_29f002,
+ .write = write_jedec_1,
.read = read_memmapped,
},
@@ -751,11 +751,11 @@
.model_id = AMIC_A29002T,
.total_size = 256,
.page_size = 64 * 1024,
- .tested = TEST_OK_PREW,
+ .tested = TEST_OK_PRE,
.probe = probe_29f002,
.probe_timing = TIMING_IGNORED, /* routine don't use probe_timing (mx29f002.c) */
.erase = erase_29f002,
- .write = write_29f002,
+ .write = write_jedec_1,
.read = read_memmapped,
},
@@ -1075,7 +1075,7 @@
.probe = probe_jedec,
.probe_timing = TIMING_ZERO, /* Datasheet has no timing info specified */
.erase = erase_chip_jedec,
- .write = write_en29f002a,
+ .write = write_jedec_1,
.read = read_memmapped,
},
@@ -1087,11 +1087,11 @@
.model_id = EN_29F002T,
.total_size = 256,
.page_size = 256,
- .tested = TEST_OK_PREW,
+ .tested = TEST_OK_PRE,
.probe = probe_jedec,
.probe_timing = TIMING_ZERO, /* Datasheet has no timing info specified */
.erase = erase_chip_jedec,
- .write = write_en29f002a,
+ .write = write_jedec_1,
.read = read_memmapped,
},
@@ -1518,11 +1518,11 @@
.model_id = MX_29F001B,
.total_size = 128,
.page_size = 32 * 1024,
- .tested = TEST_OK_PREW,
+ .tested = TEST_OK_PRE,
.probe = probe_29f002,
.probe_timing = TIMING_IGNORED, /* routine don't use probe_timing (mx29f002.c) */
.erase = erase_29f002,
- .write = write_29f002,
+ .write = write_jedec_1,
.read = read_memmapped,
},
@@ -1534,11 +1534,11 @@
.model_id = MX_29F001T,
.total_size = 128,
.page_size = 32 * 1024,
- .tested = TEST_OK_PREW,
+ .tested = TEST_OK_PRE,
.probe = probe_29f002,
.probe_timing = TIMING_IGNORED, /* routine don't use probe_timing (mx29f002.c) */
.erase = erase_29f002,
- .write = write_29f002,
+ .write = write_jedec_1,
.read = read_memmapped,
},
@@ -1554,7 +1554,7 @@
.probe = probe_29f002,
.probe_timing = TIMING_IGNORED, /* routine don't use probe_timing (mx29f002.c) */
.erase = erase_29f002,
- .write = write_29f002,
+ .write = write_jedec_1,
.read = read_memmapped,
},
@@ -1566,11 +1566,11 @@
.model_id = MX_29F002T,
.total_size = 256,
.page_size = 64 * 1024,
- .tested = TEST_OK_PREW,
+ .tested = TEST_OK_PRE,
.probe = probe_29f002,
.probe_timing = TIMING_IGNORED, /* routine don't use probe_timing (mx29f002.c) */
.erase = erase_29f002,
- .write = write_29f002,
+ .write = write_jedec_1,
.read = read_memmapped,
},
@@ -1586,7 +1586,7 @@
.probe = probe_29f002,
.probe_timing = TIMING_IGNORED, /* routine don't use probe_timing (mx29f002.c) */
.erase = erase_29f002,
- .write = write_29f002,
+ .write = write_jedec_1,
.read = read_memmapped,
},
Index: m29f002.c
===================================================================
--- m29f002.c (Revision 784)
+++ m29f002.c (Arbeitskopie)
@@ -45,6 +45,7 @@
chipaddr dst = bios + start;
/* erase */
+ /* FIXME: use erase_sector_jedec? */
chip_writeb(0xaa, bios + 0x555);
chip_writeb(0x55, bios + 0xaaa);
chip_writeb(0x80, bios + 0x555);
@@ -59,6 +60,7 @@
}
/* program */
+ /* FIXME: use write_sector_jedec? */
while (size--) {
chip_writeb(0xaa, bios + 0x555);
chip_writeb(0x55, bios + 0xaaa);
Index: am29f040b.c
===================================================================
--- am29f040b.c (Revision 784)
+++ am29f040b.c (Arbeitskopie)
@@ -20,6 +20,8 @@
#include "flash.h"
+/* FIMXE: check that the 2 second delay is really needed.
+ Use erase_sector_jedec if not? */
static int erase_sector_29f040b(struct flashchip *flash, unsigned long address)
{
int page_size = flash->page_size;
@@ -44,6 +46,7 @@
return 0;
}
+/* FIXME: use write_sector_jedec? */
static int write_sector_29f040b(chipaddr bios, uint8_t *src, chipaddr dst,
unsigned int page_size)
{
@@ -91,6 +94,7 @@
return 0;
}
+/* FIXME: use erase_chip_jedec? */
int erase_29f040b(struct flashchip *flash)
{
int total_size = flash->total_size * 1024;
Index: mx29f002.c
===================================================================
--- mx29f002.c (Revision 784)
+++ mx29f002.c (Arbeitskopie)
@@ -43,6 +43,9 @@
return 0;
}
+/* FIXME: Use erase_chip_jedec?
+ * erase_29f002 uses shorter addresses, sends F0 (exit ID mode) and
+ * and has a bigger delay before polling the toggle bit */
int erase_29f002(struct flashchip *flash)
{
chipaddr bios = flash->virtual_memory;
@@ -64,37 +67,3 @@
}
return 0;
}
-
-int write_29f002(struct flashchip *flash, uint8_t *buf)
-{
- int i;
- int total_size = flash->total_size * 1024;
- chipaddr bios = flash->virtual_memory;
- chipaddr dst = bios;
-
- chip_writeb(0xF0, bios);
- programmer_delay(10);
- if (erase_29f002(flash)) {
- fprintf(stderr, "ERASE FAILED!\n");
- return -1;
- }
- printf("Programming page: ");
- for (i = 0; i < total_size; i++) {
- /* write to the sector */
- if ((i & 0xfff) == 0)
- printf("address: 0x%08lx", (unsigned long)i);
- chip_writeb(0xAA, bios + 0x5555);
- chip_writeb(0x55, bios + 0x2AAA);
- chip_writeb(0xA0, bios + 0x5555);
- chip_writeb(*buf++, dst++);
-
- /* wait for Toggle bit ready */
- toggle_ready_jedec(dst);
-
- if ((i & 0xfff) == 0)
- printf("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b");
- }
- printf("\n");
-
- return 0;
-}
Index: m29f400bt.c
===================================================================
--- m29f400bt.c (Revision 784)
+++ m29f400bt.c (Arbeitskopie)
@@ -20,6 +20,12 @@
#include "flash.h"
+/* WARNING!
+ This chip uses the standard JEDEC Addresses in 16-bit mode as word
+ addresses. In byte mode, 0xAAA has to be used instead of 0x555 and
+ 0x555 instead of 0x2AA. Do *not* blindly replace with standard JEDEC
+ functions. */
+
void write_page_m29f400bt(chipaddr bios, uint8_t *src,
chipaddr dst, int page_size)
{
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