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Big cosmetic offensive on flashrom

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* Give decent names to virt_addr and virt_addr_2
* add some comments
* move virtual addresses to the end of the struct,
  so they dont mess up the initializer.

Corresponding to flashrom svn r111 and coreboot v2 svn r2689.

Signed-off-by: Stefan Reinauer <stepan@coresystems.de>
Acked-by: Stefan Reinauer <stepan@coresystems.de>
This commit is contained in:
Stefan Reinauer
2007-05-23 17:20:56 +00:00
committed by Stefan Reinauer
parent bc1f1a01e4
commit ce532975cb
17 changed files with 183 additions and 178 deletions
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23
sharplhf00l04.c
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@ -47,10 +47,12 @@ void print_lhf00l04_status(uint8_t status)
int probe_lhf00l04(struct flashchip *flash)
{
volatile uint8_t *bios = flash->virt_addr;
volatile uint8_t *bios = flash->virtual_memory;
volatile uint8_t *registers;
uint8_t id1, id2;
#if 0
/* Enter ID mode */
*(volatile uint8_t *)(bios + 0x5555) = 0xAA;
*(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
*(volatile uint8_t *)(bios + 0x5555) = 0x90;
@ -64,12 +66,11 @@ int probe_lhf00l04(struct flashchip *flash)
id1 = *(volatile uint8_t *)bios;
id2 = *(volatile uint8_t *)(bios + 0x01);
#if 1
/* Leave ID mode */
*(volatile uint8_t *)(bios + 0x5555) = 0xAA;
*(volatile uint8_t *)(bios + 0x2AAA) = 0x55;
*(volatile uint8_t *)(bios + 0x5555) = 0xF0;
#endif
myusec_delay(10);
printf_debug("%s: id1 0x%x, id2 0x%x\n", __FUNCTION__, id1, id2);
@ -77,15 +78,15 @@ int probe_lhf00l04(struct flashchip *flash)
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,
registers = mmap(0, size, PROT_WRITE | PROT_READ, MAP_SHARED,
fd_mem, (off_t) (0 - 0x400000 - size));
if (bios == MAP_FAILED) {
if (registers == MAP_FAILED) {
// it's this part but we can't map it ...
perror("Error MMAP /dev/mem");
exit(1);
}
flash->virt_addr_2 = bios;
flash->virtual_registers = registers;
printf("bios %p, *bios 0x%x, bios[1] 0x%x\n", bios, *bios,
bios[1]);
return 1;
@ -124,14 +125,14 @@ uint8_t wait_lhf00l04(volatile uint8_t *bios)
}
int erase_lhf00l04_block(struct flashchip *flash, int offset)
{
volatile uint8_t *bios = flash->virt_addr + offset;
volatile uint8_t *wrprotect = flash->virt_addr_2 + offset + 2;
volatile uint8_t *bios = flash->virtual_memory + offset;
volatile uint8_t *wrprotect = flash->virtual_registers + offset + 2;
uint8_t status;
// clear status register
*bios = 0x50;
printf("Erase at %p\n", bios);
status = wait_lhf00l04(flash->virt_addr);
status = wait_lhf00l04(flash->virtual_memory);
print_lhf00l04_status(status);
// clear write protect
printf("write protect is at %p\n", (wrprotect));
@ -144,7 +145,7 @@ int erase_lhf00l04_block(struct flashchip *flash, int offset)
*(volatile uint8_t *)(bios) = 0xd0;
myusec_delay(10);
// now let's see what the register is
status = wait_lhf00l04(flash->virt_addr);
status = wait_lhf00l04(flash->virtual_memory);
print_lhf00l04_status(status);
printf("DONE BLOCK 0x%x\n", offset);
return (0);
@ -181,7 +182,7 @@ int write_lhf00l04(struct flashchip *flash, uint8_t *buf)
int i;
int total_size = flash->total_size * 1024;
int page_size = flash->page_size;
volatile uint8_t *bios = flash->virt_addr;
volatile uint8_t *bios = flash->virtual_memory;
erase_lhf00l04(flash);
if (*bios != 0xff) {