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Abstract mapping/unmapping of flash regions

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Flash mapping/unmapping was performed without an abstraction layer,
so even the dummy flasher caused memory mappings to be set up. Add
map/unmap functions to the external flasher abstraction.

Fix a possible scribble-over-low-memory corner case which fortunately
never triggered so far.

With this patch, --programmer dummy works fine as non-root.

Corresponding to flashrom svn r493.

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
2009-05-11 14:13:25 +00:00
parent d0fc9469fd
commit 1455b2baea
4 changed files with 57 additions and 18 deletions
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13
dummyflasher.c
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@ -40,6 +40,19 @@ int dummy_shutdown(void)
return 0;
}
void *dummy_map(const char *descr, unsigned long phys_addr, size_t len)
{
printf("%s: Mapping %s, 0x%lx bytes at 0x%08lx\n",
__func__, descr, (unsigned long)len, phys_addr);
return (void *)phys_addr;
}
void dummy_unmap(void *virt_addr, size_t len)
{
printf("%s: Unmapping 0x%lx bytes at %p\n",
__func__, (unsigned long)len, virt_addr);
}
void dummy_chip_writeb(uint8_t val, volatile void *addr)
{
printf("%s: addr=%p, val=0x%02x\n", __func__, addr, val);