mirror of
https://review.coreboot.org/flashrom.git
synced 2025-10-31 05:10:41 +01:00
Fixes
- switch to volatile everywhere - use myusec_delay instead of usleep Corresponding to coreboot v1 svn r492.
This commit is contained in:
Ronald G. Minnich
6
Makefile
6
Makefile
@@ -3,9 +3,7 @@ CC = gcc -O2
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all: ${OBJS}
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${CC} -o flash_rom flash_rom.c ${OBJS}
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${CC} -o flash_on flash_on.c
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${CC} -o acpi_reset acpi_reset.c
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${CC} -o acpi_shutdown acpi_shutdown.c
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# ${CC} -o flash_on flash_on.c
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clean:
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rm -f flash_rom flash_on acpi_reset acpi_shutdown *.o *~
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rm -f flash_rom flash_on *.o *~
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17
am29f040b.c
17
am29f040b.c
@@ -27,7 +27,7 @@
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#include "flash.h"
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#include "jedec.h"
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static __inline__ erase_sector_29f040b (char * bios, unsigned long address)
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static __inline__ erase_sector_29f040b (volatile char * bios, unsigned long address)
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{
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*(bios + 0x555) = 0xAA;
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*(bios + 0x2AA) = 0x55;
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@@ -42,8 +42,8 @@ static __inline__ erase_sector_29f040b (char * bios, unsigned long address)
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toggle_ready_jedec(bios + address);
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}
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static __inline__ write_sector_29f040b(char * bios, unsigned char * src,
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unsigned char * dst, unsigned int page_size)
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static __inline__ write_sector_29f040b(volatile char * bios, unsigned char * src,
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volatile unsigned char * dst, unsigned int page_size)
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{
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int i;
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@@ -64,7 +64,7 @@ static __inline__ write_sector_29f040b(char * bios, unsigned char * src,
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int probe_29f040b (struct flashchip * flash)
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{
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char * bios = flash->virt_addr;
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volatile char * bios = flash->virt_addr;
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unsigned char id1, id2;
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*(bios + 0x555) = 0xAA;
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@@ -76,8 +76,9 @@ int probe_29f040b (struct flashchip * flash)
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*bios = 0xF0;
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usleep(10);
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myusec_delay(10);
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printf(__FUNCTION__ "id1 %d, id2 %d\n", id1, id2);
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if (id1 == flash->manufacture_id && id2 == flash->model_id)
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return 1;
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@@ -86,7 +87,7 @@ int probe_29f040b (struct flashchip * flash)
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int erase_29f040b (struct flashchip * flash)
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{
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char * bios = flash->virt_addr;
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volatile char * bios = flash->virt_addr;
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*(bios + 0x555) = 0xAA;
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*(bios + 0x2AA) = 0x55;
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@@ -95,7 +96,7 @@ int erase_29f040b (struct flashchip * flash)
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*(bios + 0x2AA) = 0x55;
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*(bios + 0x555) = 0x10;
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usleep(10);
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myusec_delay(10);
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toggle_ready_jedec(bios);
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}
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@@ -103,7 +104,7 @@ int write_29f040b (struct flashchip * flash, char * buf)
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{
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int i;
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int total_size = flash->total_size * 1024, page_size = flash->page_size;
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char * bios = flash->virt_addr;
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volatile char * bios = flash->virt_addr;
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printf ("Programming Page: ");
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for (i = 0; i < total_size/page_size; i++) {
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2
flash.h
2
flash.h
@@ -6,7 +6,7 @@ struct flashchip {
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int manufacture_id;
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int model_id;
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char * virt_addr;
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volatile char * virt_addr;
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int total_size;
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int page_size;
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61
flash_rom.c
61
flash_rom.c
@@ -109,7 +109,7 @@ int enable_flash_sis630 (void)
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struct flashchip * probe_flash(struct flashchip * flash)
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{
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int fd_mem;
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char * bios;
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volatile char * bios;
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unsigned long size;
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if ((fd_mem = open("/dev/mem", O_RDWR)) < 0) {
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@@ -118,6 +118,7 @@ struct flashchip * probe_flash(struct flashchip * flash)
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}
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while (flash->name != NULL) {
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printf("Trying %s, %d KB\n", flash->name, flash->total_size);
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size = flash->total_size * 1024;
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bios = mmap (0, size, PROT_WRITE | PROT_READ, MAP_SHARED,
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fd_mem, (off_t) (0 - size));
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@@ -132,7 +133,7 @@ struct flashchip * probe_flash(struct flashchip * flash)
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flash->name, (0 - size), bios);
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return flash;
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}
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munmap (bios, size);
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munmap ((void *) bios, size);
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flash++;
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}
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return NULL;
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@@ -142,7 +143,7 @@ int verify_flash (struct flashchip * flash, char * buf)
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{
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int i = 0;
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int total_size = flash->total_size *1024;
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char * bios = flash->virt_addr;
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volatile char * bios = flash->virt_addr;
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printf("Verifying address: ");
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while (i++ < total_size) {
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@@ -156,6 +157,52 @@ int verify_flash (struct flashchip * flash, char * buf)
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return 1;
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}
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// count to a billion. Time it. If it's < 1 sec, count to 10B, etc.
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unsigned long micro = 0;
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void
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myusec_calibrate_delay()
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{
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unsigned long count = 2 * 1024 * 1024;
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volatile unsigned long i;
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unsigned long timeusec;
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struct timeval start, end;
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int ok = 0;
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fprintf(stderr, "Setting up microsecond timing loop\n");
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while (! ok) {
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fprintf(stderr, "Try %d\n", count);
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gettimeofday(&start, 0);
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for( i = count; i; i--)
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;
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gettimeofday(&end, 0);
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timeusec = 1000000 * (end.tv_sec - start.tv_sec ) +
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(end.tv_usec - start.tv_usec);
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fprintf(stderr, "timeusec is %d\n", timeusec);
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count *= 10;
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if (timeusec < 1000000)
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continue;
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ok = 1;
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}
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// compute one microsecond. That will be count / time
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micro = count / timeusec;
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fprintf(stderr, "one us is %d count\n", micro);
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}
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void
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myusec_delay(time)
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{
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volatile unsigned long i;
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for(i = 0; i < time * micro; i++)
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;
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}
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main (int argc, char * argv[])
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{
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char * buf;
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@@ -163,20 +210,20 @@ main (int argc, char * argv[])
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FILE * image;
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struct flashchip * flash;
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myusec_calibrate_delay();
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if (argc > 2){
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printf("usage: %s [romimage]\n", argv[0]);
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printf(" If no romimage is specified, then all that happens\n");
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printf(" is that flash writes are enabled (useful for DoC)\n");
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exit(1);
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printf(" is that flash info is dumped\n");
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}
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enable_flash_sis630 ();
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if ((flash = probe_flash (flashchips)) == NULL) {
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printf("EEPROM not found\n");
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exit(1);
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}
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printf("Part is %s\n", flash->name);
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if (argc < 2){
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printf("OK, only ENABLING flash write, but NOT FLASHING\n");
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exit(0);
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41
jedec.c
41
jedec.c
@@ -29,24 +29,25 @@
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int probe_jedec (struct flashchip * flash)
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{
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char * bios = flash->virt_addr;
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volatile char * bios = flash->virt_addr;
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unsigned char id1, id2;
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*(char *) (bios + 0x5555) = 0xAA;
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*(char *) (bios + 0x2AAA) = 0x55;
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*(char *) (bios + 0x5555) = 0x90;
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*(volatile char *) (bios + 0x5555) = 0xAA;
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*(volatile char *) (bios + 0x2AAA) = 0x55;
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*(volatile char *) (bios + 0x5555) = 0x90;
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usleep(10);
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myusec_delay(10);
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id1 = *(unsigned char *) bios;
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id2 = *(unsigned char *) (bios + 0x01);
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id1 = *(volatile unsigned char *) bios;
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id2 = *(volatile unsigned char *) (bios + 0x01);
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*(char *) (bios + 0x5555) = 0xAA;
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*(char *) (bios + 0x2AAA) = 0x55;
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*(char *) (bios + 0x5555) = 0xF0;
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*(volatile char *) (bios + 0x5555) = 0xAA;
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*(volatile char *) (bios + 0x2AAA) = 0x55;
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*(volatile char *) (bios + 0x5555) = 0xF0;
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usleep(10);
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myusec_delay(10);
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printf(__FUNCTION__ "id1 %d, id2 %d\n", id1, id2);
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if (id1 == flash->manufacture_id && id2 == flash->model_id)
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return 1;
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@@ -55,17 +56,17 @@ int probe_jedec (struct flashchip * flash)
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int erase_jedec (struct flashchip * flash)
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{
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char * bios = flash->virt_addr;
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volatile char * bios = flash->virt_addr;
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*(char *) (bios + 0x5555) = 0xAA;
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*(char *) (bios + 0x2AAA) = 0x55;
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*(char *) (bios + 0x5555) = 0x80;
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*(volatile char *) (bios + 0x5555) = 0xAA;
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*(volatile char *) (bios + 0x2AAA) = 0x55;
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*(volatile char *) (bios + 0x5555) = 0x80;
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*(char *) (bios + 0x5555) = 0xAA;
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*(char *) (bios + 0x2AAA) = 0x55;
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*(char *) (bios + 0x5555) = 0x10;
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*(volatile char *) (bios + 0x5555) = 0xAA;
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*(volatile char *) (bios + 0x2AAA) = 0x55;
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*(volatile char *) (bios + 0x5555) = 0x10;
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usleep(10);
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myusec_delay(10);
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toggle_ready_jedec(bios);
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}
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@@ -73,7 +74,7 @@ int write_jedec (struct flashchip * flash, char * buf)
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{
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int i;
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int total_size = flash->total_size *1024, page_size = flash->page_size;
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char * bios = flash->virt_addr;
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volatile char * bios = flash->virt_addr;
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erase_jedec (flash);
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printf ("Programming Page: ");
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20
jedec.h
20
jedec.h
@@ -2,7 +2,7 @@ extern int probe_jedec (struct flashchip * flash);
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extern int erase_jedec (struct flashchip * flash);
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extern int write_jedec (struct flashchip * flash, char * buf);
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extern __inline__ void toggle_ready_jedec (char * dst)
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extern __inline__ void toggle_ready_jedec (volatile char * dst)
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{
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unsigned int i = 0;
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char tmp1, tmp2;
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@@ -18,7 +18,7 @@ extern __inline__ void toggle_ready_jedec (char * dst)
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}
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}
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extern __inline__ void data_polling_jedec (char * dst, char data)
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extern __inline__ void data_polling_jedec (volatile char * dst, char data)
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{
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unsigned int i = 0;
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char tmp;
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@@ -33,23 +33,23 @@ extern __inline__ void data_polling_jedec (char * dst, char data)
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}
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}
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extern __inline__ void protect_jedec (char * bios)
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extern __inline__ void protect_jedec (volatile char * bios)
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{
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*(char *) (bios + 0x5555) = 0xAA;
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*(char *) (bios + 0x2AAA) = 0x55;
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*(char *) (bios + 0x5555) = 0xA0;
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*(volatile char *) (bios + 0x5555) = 0xAA;
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*(volatile char *) (bios + 0x2AAA) = 0x55;
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*(volatile char *) (bios + 0x5555) = 0xA0;
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usleep(200);
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}
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extern __inline__ void write_page_jedec (char * bios, char * src, char * dst,
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extern __inline__ void write_page_jedec (volatile char * bios, char * src, volatile char * dst,
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int page_size)
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{
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int i;
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*(char *) (bios + 0x5555) = 0xAA;
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*(char *) (bios + 0x2AAA) = 0x55;
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*(char *) (bios + 0x5555) = 0xA0;
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*(volatile char *) (bios + 0x5555) = 0xAA;
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*(volatile char *) (bios + 0x2AAA) = 0x55;
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*(volatile char *) (bios + 0x5555) = 0xA0;
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for (i = 0; i < page_size; i++) {
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/* transfer data from source to destination */
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19
mx29f002.c
19
mx29f002.c
@@ -30,20 +30,21 @@
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int probe_29f002 (struct flashchip * flash)
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{
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char * bios = flash->virt_addr;
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volatile char * bios = flash->virt_addr;
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unsigned char id1, id2, id3;
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*(bios + 0x5555) = 0xAA;
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*(bios + 0x2AAA) = 0x55;
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*(bios + 0x5555) = 0x90;
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id1 = *(unsigned char *) bios;
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id2 = *(unsigned char *) (bios + 0x01);
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id1 = *(volatile unsigned char *) bios;
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id2 = *(volatile unsigned char *) (bios + 0x01);
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*bios = 0xF0;
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usleep(10);
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myusec_delay(10);
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printf(__FUNCTION__ "id1 %d, id2 %d\n", id1, id2);
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if (id1 == flash->manufacture_id && id2 == flash->model_id)
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return 1;
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@@ -52,7 +53,7 @@ int probe_29f002 (struct flashchip * flash)
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int erase_29f002 (struct flashchip * flash)
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{
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char * bios = flash->virt_addr;
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volatile char * bios = flash->virt_addr;
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again:
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*(bios + 0x555) = 0xF0;
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@@ -63,7 +64,7 @@ int erase_29f002 (struct flashchip * flash)
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*(bios + 0x2AA) = 0x55;
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*(bios + 0x555) = 0x10;
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usleep(100);
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myusec_delay(100);
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toggle_ready_jedec(bios);
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// while ((*bios & 0x40) != 0x40)
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@@ -85,11 +86,11 @@ int write_29f002 (struct flashchip * flash, char * buf)
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{
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int i;
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int total_size = flash->total_size * 1024, page_size = flash->page_size;
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char * bios = flash->virt_addr;
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char * dst = bios, * src = buf;
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volatile char * bios = flash->virt_addr;
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volatile char * dst = bios, * src = buf;
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*bios = 0xF0;
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usleep(10);
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myusec_delay(10);
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erase_29f002(flash);
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//*bios = 0xF0;
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#if 1
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59
sst28sf040.c
59
sst28sf040.c
@@ -35,35 +35,35 @@
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#define RESET 0xFF
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#define READ_ID 0x90
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static __inline__ void protect_28sf040 (char * bios)
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static __inline__ void protect_28sf040 (volatile char * bios)
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{
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/* ask compiler not to optimize this */
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volatile unsigned char tmp;
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tmp = *(unsigned char *) (bios + 0x1823);
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tmp = *(unsigned char *) (bios + 0x1820);
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tmp = *(unsigned char *) (bios + 0x1822);
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tmp = *(unsigned char *) (bios + 0x0418);
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tmp = *(unsigned char *) (bios + 0x041B);
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tmp = *(unsigned char *) (bios + 0x0419);
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tmp = *(unsigned char *) (bios + 0x040A);
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tmp = *(volatile unsigned char *) (bios + 0x1823);
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tmp = *(volatile unsigned char *) (bios + 0x1820);
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tmp = *(volatile unsigned char *) (bios + 0x1822);
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tmp = *(volatile unsigned char *) (bios + 0x0418);
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tmp = *(volatile unsigned char *) (bios + 0x041B);
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tmp = *(volatile unsigned char *) (bios + 0x0419);
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tmp = *(volatile unsigned char *) (bios + 0x040A);
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}
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static __inline__ void unprotect_28sf040 (char * bios)
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static __inline__ void unprotect_28sf040 (volatile char * bios)
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{
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/* ask compiler not to optimize this */
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volatile unsigned char tmp;
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tmp = *(unsigned char *) (bios + 0x1823);
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tmp = *(unsigned char *) (bios + 0x1820);
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tmp = *(unsigned char *) (bios + 0x1822);
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tmp = *(unsigned char *) (bios + 0x0418);
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tmp = *(unsigned char *) (bios + 0x041B);
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tmp = *(unsigned char *) (bios + 0x0419);
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tmp = *(unsigned char *) (bios + 0x041A);
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tmp = *(volatile unsigned char *) (bios + 0x1823);
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tmp = *(volatile unsigned char *) (bios + 0x1820);
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tmp = *(volatile unsigned char *) (bios + 0x1822);
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tmp = *(volatile unsigned char *) (bios + 0x0418);
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tmp = *(volatile unsigned char *) (bios + 0x041B);
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tmp = *(volatile unsigned char *) (bios + 0x0419);
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tmp = *(volatile unsigned char *) (bios + 0x041A);
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}
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static __inline__ erase_sector_28sf040 (char * bios, unsigned long address)
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||||
static __inline__ erase_sector_28sf040 (volatile char * bios, unsigned long address)
|
||||
{
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*bios = AUTO_PG_ERASE1;
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*(bios + address) = AUTO_PG_ERASE2;
|
||||
@@ -72,8 +72,8 @@ static __inline__ erase_sector_28sf040 (char * bios, unsigned long address)
|
||||
toggle_ready_jedec(bios);
|
||||
}
|
||||
|
||||
static __inline__ write_sector_28sf040(char * bios, unsigned char * src,
|
||||
unsigned char * dst, unsigned int page_size)
|
||||
static __inline__ write_sector_28sf040(volatile char * bios, unsigned char * src,
|
||||
volatile unsigned char * dst, unsigned int page_size)
|
||||
{
|
||||
int i;
|
||||
|
||||
@@ -95,24 +95,25 @@ static __inline__ write_sector_28sf040(char * bios, unsigned char * src,
|
||||
|
||||
int probe_28sf040 (struct flashchip * flash)
|
||||
{
|
||||
char * bios = flash->virt_addr;
|
||||
volatile char * bios = flash->virt_addr;
|
||||
unsigned char id1, id2, tmp;
|
||||
|
||||
/* save the value at the beginning of the Flash */
|
||||
tmp = *bios;
|
||||
|
||||
*bios = RESET;
|
||||
usleep(10);
|
||||
myusec_delay(10);
|
||||
|
||||
*bios = READ_ID;
|
||||
usleep(10);
|
||||
id1 = *(unsigned char *) bios;
|
||||
usleep(10);
|
||||
id2 = *(unsigned char *) (bios + 0x01);
|
||||
myusec_delay(10);
|
||||
id1 = *(volatile unsigned char *) bios;
|
||||
myusec_delay(10);
|
||||
id2 = *(volatile unsigned char *) (bios + 0x01);
|
||||
|
||||
*bios = RESET;
|
||||
usleep(10);
|
||||
myusec_delay(10);
|
||||
|
||||
printf(__FUNCTION__ "id1 %d, id2 %d\n", id1, id2);
|
||||
if (id1 == flash->manufacture_id && id2 == flash->model_id)
|
||||
return 1;
|
||||
|
||||
@@ -123,14 +124,14 @@ int probe_28sf040 (struct flashchip * flash)
|
||||
|
||||
int erase_28sf040 (struct flashchip * flash)
|
||||
{
|
||||
char * bios = flash->virt_addr;
|
||||
volatile char * bios = flash->virt_addr;
|
||||
|
||||
unprotect_28sf040 (bios);
|
||||
*bios = CHIP_ERASE;
|
||||
*bios = CHIP_ERASE;
|
||||
protect_28sf040 (bios);
|
||||
|
||||
usleep(10);
|
||||
myusec_delay(10);
|
||||
toggle_ready_jedec(bios);
|
||||
}
|
||||
|
||||
@@ -138,7 +139,7 @@ int write_28sf040 (struct flashchip * flash, char * buf)
|
||||
{
|
||||
int i;
|
||||
int total_size = flash->total_size * 1024, page_size = flash->page_size;
|
||||
char * bios = flash->virt_addr;
|
||||
volatile char * bios = flash->virt_addr;
|
||||
|
||||
unprotect_28sf040 (bios);
|
||||
|
||||
|
||||
Reference in New Issue
Block a user