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authorOllie Lho <ollie@sis.com.tw>2004-03-20 16:46:10 +0000
committerOllie Lho <ollie@sis.com.tw>2004-03-20 16:46:10 +0000
commit761bf1bdb7268f8818dd22b15e944365afdf1459 (patch)
treeecbd632c87d64c6651f84a705ce4c3861108069d /82802ab.c
parent73eca80d9b28bfc38fa4b8d2ef9c580840133a38 (diff)
downloadast2050-flashrom-761bf1bdb7268f8818dd22b15e944365afdf1459.zip
ast2050-flashrom-761bf1bdb7268f8818dd22b15e944365afdf1459.tar.gz
Consolidate more jedec standard code
Corresponding to flashrom svn r15 and coreboot v2 svn r1457.
Diffstat (limited to '82802ab.c')
-rw-r--r--82802ab.c92
1 files changed, 47 insertions, 45 deletions
diff --git a/82802ab.c b/82802ab.c
index c818e92..80945ad 100644
--- a/82802ab.c
+++ b/82802ab.c
@@ -47,10 +47,10 @@ void print_82802ab_status(unsigned char status)
printf("%s", status & 0x2 ? "WP|TBL#|WP#,ABORT:" : "UNLOCK:");
}
-int probe_82802ab (struct flashchip * flash)
+int probe_82802ab(struct flashchip *flash)
{
- volatile unsigned char * bios = flash->virt_addr;
- unsigned char id1, id2;
+ volatile unsigned char *bios = flash->virt_addr;
+ unsigned char id1, id2;
#if 0
*(volatile unsigned char *) (bios + 0x5555) = 0xAA;
@@ -74,18 +74,18 @@ int probe_82802ab (struct flashchip * flash)
#endif
myusec_delay(10);
- printf("%s: id1 0x%x, id2 0x%x\n", __FUNCTION__, id1, id2);
+ printf("%s: id1 0x%x, id2 0x%x\n", __FUNCTION__, id1, id2);
if (id1 == flash->manufacture_id && id2 == flash->model_id) {
size_t size = flash->total_size * 1024;
// we need to mmap the write-protect space.
- bios = mmap (0, size, PROT_WRITE | PROT_READ, MAP_SHARED,
- flash->fd_mem, (off_t) (0 - 0x400000 - size));
- if (bios == MAP_FAILED) {
+ bios = mmap(0, size, PROT_WRITE | PROT_READ, MAP_SHARED,
+ flash->fd_mem, (off_t) (0 - 0x400000 - size));
+ if (bios == MAP_FAILED) {
// it's this part but we can't map it ...
- perror("Error MMAP /dev/mem");
- exit(1);
- }
+ perror("Error MMAP /dev/mem");
+ exit(1);
+ }
flash->virt_addr_2 = bios;
return 1;
@@ -94,39 +94,39 @@ int probe_82802ab (struct flashchip * flash)
return 0;
}
-unsigned char wait_82802ab(volatile unsigned char * bios)
+unsigned char wait_82802ab(volatile unsigned char *bios)
{
unsigned char status;
unsigned char id1, id2;
*bios = 0x70;
- if ((*bios & 0x80) == 0) { // it's busy
- while ((*bios & 0x80) == 0)
- ;
+ if ((*bios & 0x80) == 0) { // it's busy
+ while ((*bios & 0x80) == 0);
}
status = *bios;
// put another command to get out of status register mode
-
+
*bios = 0x90;
myusec_delay(10);
id1 = *(volatile unsigned char *) bios;
id2 = *(volatile unsigned char *) (bios + 0x01);
-
+
// this is needed to jam it out of "read id" mode
*(volatile unsigned char *) (bios + 0x5555) = 0xAA;
*(volatile unsigned char *) (bios + 0x2AAA) = 0x55;
*(volatile unsigned char *) (bios + 0x5555) = 0xF0;
return status;
-
+
}
int erase_82802ab_block(struct flashchip *flash, int offset)
{
- volatile unsigned char * bios = flash->virt_addr + offset;
- volatile unsigned char *wrprotect = flash->virt_addr_2 + offset + 2;
+ volatile unsigned char *bios = flash->virt_addr + offset;
+ volatile unsigned char *wrprotect =
+ flash->virt_addr_2 + offset + 2;
unsigned char status;
// clear status register
@@ -146,54 +146,56 @@ int erase_82802ab_block(struct flashchip *flash, int offset)
status = wait_82802ab(flash->virt_addr);
//print_82802ab_status(status);
printf("DONE BLOCK 0x%x\n", offset);
- return(0);
+ return (0);
}
-int erase_82802ab (struct flashchip * flash)
+int erase_82802ab(struct flashchip *flash)
{
int i;
unsigned int total_size = flash->total_size * 1024;
- printf("total_size is %d; flash->page_size is %d\n",
- total_size, flash->page_size);
- for(i = 0; i < total_size; i += flash->page_size)
+ printf("total_size is %d; flash->page_size is %d\n",
+ total_size, flash->page_size);
+ for (i = 0; i < total_size; i += flash->page_size)
erase_82802ab_block(flash, i);
printf("DONE ERASE\n");
- return(0);
+ return (0);
}
-void write_page_82802ab (volatile char * bios, char * src, volatile char * dst,
- int page_size)
+void write_page_82802ab(volatile char *bios, char *src, volatile char *dst,
+ int page_size)
{
- int i;
+ int i;
- for (i = 0; i < page_size; i++) {
- /* transfer data from source to destination */
- *dst = 0x40;
- *dst++ = *src++;
+ for (i = 0; i < page_size; i++) {
+ /* transfer data from source to destination */
+ *dst = 0x40;
+ *dst++ = *src++;
wait_82802ab(bios);
- }
+ }
}
-int write_82802ab (struct flashchip * flash, unsigned char * buf)
+int write_82802ab(struct flashchip *flash, unsigned char *buf)
{
int i;
- int total_size = flash->total_size *1024, page_size = flash->page_size;
- volatile unsigned char * bios = flash->virt_addr;
+ int total_size = flash->total_size * 1024, page_size =
+ flash->page_size;
+ volatile unsigned char *bios = flash->virt_addr;
- erase_82802ab (flash);
+ erase_82802ab(flash);
if (*bios != 0xff) {
printf("ERASE FAILED\n");
return -1;
}
- printf ("Programming Page: ");
- for (i = 0; i < total_size/page_size; i++) {
- printf ("%04d at address: 0x%08x", i, i * page_size);
- write_page_82802ab(bios, buf + i * page_size, bios + i * page_size,
- page_size);
- printf ("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b");
+ printf("Programming Page: ");
+ for (i = 0; i < total_size / page_size; i++) {
+ printf("%04d at address: 0x%08x", i, i * page_size);
+ write_page_82802ab(bios, buf + i * page_size,
+ bios + i * page_size, page_size);
+ printf
+ ("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b");
}
printf("\n");
- protect_82802ab (bios);
- return(0);
+ protect_82802ab(bios);
+ return (0);
}
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