GNUBoot
/
coreboot-kgpe-d16
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Activate proper support for EN29F002(A)(N)[BT]. 

Fully tested for Probe/Read/Erase/Write on EN29F002NT.
Jedec subroutines 'probe_jedec()' and 'erase_chip_jedec()'
are still in use, but a tailored 'write_en29f002a()' is
needed due to a byte wise writing mechanism for this chip.

Signed-off-by: Mats Erik Andersson <mats.andersson@gisladisker.se>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>



git-svn-id: svn://svn.coreboot.org/coreboot/trunk@3602 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Mats Erik Andersson 2008-09-26 13:19:02 +00:00 committed by Uwe Hermann
parent 6c55b05cb2
commit ad9bdb4345
4 changed files with 54 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
util/flashrom/Makefile
View File

@ -26,7 +26,7 @@ endif
OBJS = chipset_enable.o board_enable.o udelay.o jedec.o stm50flw0x0x.o \
sst28sf040.o am29f040b.o mx29f002.o sst39sf020.o m29f400bt.o \
w49f002u.o 82802ab.o pm49fl00x.o sst49lf040.o \
w49f002u.o 82802ab.o pm49fl00x.o sst49lf040.o en29f002a.o \
sst49lfxxxc.o sst_fwhub.o layout.o cbtable.o flashchips.o \
flashrom.o w39v080fa.o sharplhf00l04.o w29ee011.o spi.o it87spi.o \
ichspi.o w39v040c.o

53
util/flashrom/en29f002a.c
View File

@ -19,12 +19,17 @@
*/
/*
EN29F512 has 1C,21
EN29F010 has 1C,20
EN29F040A has 1C,04
EN29LV010 has 1C,6E and uses short F0 reset sequence
EN29LV040(A) has 1C,4F and uses short F0 reset sequence
* EN29F512 has 1C,21
* EN29F010 has 1C,20
* EN29F040A has 1C,04
* EN29LV010 has 1C,6E and uses short F0 reset sequence
* EN29LV040(A) has 1C,4F and uses short F0 reset sequence
*/
#include <stdio.h>
#include <stdint.h>
#include "flash.h"
int probe_en29f512(struct flashchip *flash)
{
volatile uint8_t *bios = flash->virtual_memory;
@ -53,9 +58,11 @@ int probe_en29f512(struct flashchip *flash)
}
/*
EN29F002AT has 1C,92
EN29F002AB has 1C,97
* EN29F002AT has 1C,92
* EN29F002AB has 1C,97
*/
/* This does not seem to function properly for EN29F002NT. */
int probe_en29f002a(struct flashchip *flash)
{
volatile uint8_t *bios = flash->virtual_memory;
@ -83,3 +90,35 @@ int probe_en29f002a(struct flashchip *flash)
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;
volatile uint8_t *bios = flash->virtual_memory;
volatile uint8_t *dst = bios;
// *bios = 0xF0;
myusec_delay(10);
erase_chip_jedec(flash);
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);
*(bios + 0x5555) = 0xAA;
*(bios + 0x2AAA) = 0x55;
*(bios + 0x5555) = 0xA0;
*dst++ = *buf++;
/* 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;
}

5
util/flashrom/flash.h
View File

@ -435,6 +435,11 @@ int probe_29f040b(struct flashchip *flash);
int erase_29f040b(struct flashchip *flash);
int write_29f040b(struct flashchip *flash, uint8_t *buf);
/* en29f002a.c */
int probe_en29f002a(struct flashchip *flash);
int erase_en29f002a(struct flashchip *flash);
int write_en29f002a(struct flashchip *flash, uint8_t *buf);
/* ichspi.c */
int ich_spi_command(unsigned int writecnt, unsigned int readcnt, const unsigned char *writearr, unsigned char *readarr);
int ich_spi_read(struct flashchip *flash, uint8_t * buf);

4
util/flashrom/flashchips.c
View File

@ -47,8 +47,8 @@ struct flashchip flashchips[] = {
{"AMIC", "A29040B", AMIC_ID_NOPREFIX, AMIC_A29040B, 512, 64 * 1024, TEST_OK_PR, probe_29f040b, erase_29f040b, write_29f040b},
{"AMIC", "A49LF040A", AMIC_ID_NOPREFIX, AMIC_A49LF040A, 512, 64 * 1024, TEST_OK_PREW, probe_49fl00x, erase_49fl00x, write_49fl00x},
{"EMST", "F49B002UA", EMST_ID, EMST_F49B002UA, 256, 4096, TEST_UNTESTED, probe_jedec, erase_chip_jedec, write_49f002},
{"EON", "EN29F002(A)(N)B", EON_ID, EN_29F002B, 256, 256, TEST_UNTESTED, probe_jedec, erase_chip_jedec, write_jedec},
{"EON", "EN29F002(A)(N)T", EON_ID, EN_29F002T, 256, 256, TEST_UNTESTED, probe_jedec, erase_chip_jedec, write_jedec},
{"EON", "EN29F002(A)(N)B", EON_ID, EN_29F002B, 256, 256, TEST_UNTESTED, probe_jedec, erase_chip_jedec, write_en29f002a},
{"EON", "EN29F002(A)(N)T", EON_ID, EN_29F002T, 256, 256, TEST_OK_PREW, probe_jedec, erase_chip_jedec, write_en29f002a},
{"Fujitsu", "MBM29F400TC", FUJITSU_ID, MBM29F400TC_STRANGE, 512, 64 * 1024, TEST_UNTESTED, probe_m29f400bt, erase_m29f400bt, write_coreboot_m29f400bt},
{"Intel", "82802AB", INTEL_ID, 173, 512, 64 * 1024, TEST_OK_PREW, probe_82802ab, erase_82802ab, write_82802ab},
{"Intel", "82802AC", INTEL_ID, 172, 1024, 64 * 1024, TEST_OK_PREW, probe_82802ab, erase_82802ab, write_82802ab},