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Introduce a type "chipaddr" to abstract the offsets within flash regions

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Use chipaddr instead of volatile uint8_t * because when we access chips
in external flashers, they are not accessed via pointers at all.

Benefits: This allows us to differentiate between volatile machine
memory accesses and flash chip accesses. It also enforces usage
of chip_{read,write}[bwl] to access flash chips, so nobody will
unintentionally use pointers to access chips anymore. Some unneeded
casts are removed as well. Grepping for chip operations and machine
memory operations doesn't yield any false positives anymore.

Compile tested on 32 bit and 64 bit Linux.

Corresponding to flashrom svn r519.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
This commit is contained in:
Carl-Daniel Hailfinger
2009-05-16 21:22:56 +00:00
parent 4059598a06
commit 5820f42ef2
23 changed files with 203 additions and 203 deletions
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10
en29f002a.c
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@ -32,7 +32,7 @@
int probe_en29f512(struct flashchip *flash)
{
volatile uint8_t *bios = flash->virtual_memory;
chipaddr bios = flash->virtual_memory;
uint8_t id1, id2;
chip_writeb(0xAA, bios + 0x555);
@ -65,7 +65,7 @@ int probe_en29f512(struct flashchip *flash)
/* This does not seem to function properly for EN29F002NT. */
int probe_en29f002a(struct flashchip *flash)
{
volatile uint8_t *bios = flash->virtual_memory;
chipaddr bios = flash->virtual_memory;
uint8_t id1, id2;
chip_writeb(0xAA, bios + 0x555);
@ -95,10 +95,10 @@ 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;
chipaddr bios = flash->virtual_memory;
chipaddr dst = bios;
// *bios = 0xF0;
//chip_writeb(0xF0, bios);
myusec_delay(10);
erase_chip_jedec(flash);