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Sometimes we want to read/write more than 4 bytes of chip content at once

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Add chip_{read,write}n to the external flasher infrastructure which
read/write n bytes at once.

Fix a few places where the code used memcpy/memcmp although that is
strictly impossible with external flashers.
Place a FIXME in the layout.c code because usage is not totally clear
and needs to be fixed to support external flashers.

As a nice side benefit, we get a noticeable speedup for builtin flash
reading which is now a memcpy() of the full flash area instead of a
series of single-byte reads.

Corresponding to flashrom svn r579.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Urja Rannikko <urjaman@gmail.com>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
This commit is contained in:
Carl-Daniel Hailfinger
2009-06-05 18:32:07 +00:00
parent ca8bfc6c22
commit 0bd2a2bdc1
7 changed files with 100 additions and 22 deletions
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20
dummyflasher.c
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@ -103,6 +103,18 @@ void dummy_chip_writel(uint32_t val, chipaddr addr)
printf_debug("%s: addr=0x%lx, val=0x%08x\n", __func__, addr, val);
}
void dummy_chip_writen(uint8_t *buf, chipaddr addr, size_t len)
{
size_t i;
printf_debug("%s: addr=0x%lx, len=0x%08lx, writing data (hex):",
__func__, addr, (unsigned long)len);
for (i = 0; i < len; i++) {
if ((i % 16) == 0)
printf_debug("\n");
printf_debug("%02x ", buf[i])
}
}
uint8_t dummy_chip_readb(const chipaddr addr)
{
printf_debug("%s: addr=0x%lx, returning 0xff\n", __func__, addr);
@ -121,6 +133,14 @@ uint32_t dummy_chip_readl(const chipaddr addr)
return 0xffffffff;
}
void dummy_chip_readn(uint8_t *buf, const chipaddr addr, size_t len)
{
printf_debug("%s: addr=0x%lx, len=0x%lx, returning array of 0xff\n",
__func__, addr, (unsigned long)len);
memset(buf, 0xff, len);
return;
}
int dummy_spi_command(unsigned int writecnt, unsigned int readcnt,
const unsigned char *writearr, unsigned char *readarr)
{