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pflash_cfi01: add device ID read command 

Add support to read manufacturer and device ID. For everything else (eg.
lock bits) 0 is returned.

Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Michael Walle 2010-05-01 19:34:06 +02:00 committed by Aurelien Jarno
parent 81a204e443
commit 0b2ec6fcfd
1 changed files with 20 additions and 0 deletions
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20
hw/pflash_cfi01.c
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@ -166,6 +166,22 @@ static uint32_t pflash_read (pflash_t *pfl, target_phys_addr_t offset,
ret = pfl->status;
DPRINTF("%s: status %x\n", __func__, ret);
break;
case 0x90:
switch (boff) {
case 0:
ret = pfl->ident[0] << 8 | pfl->ident[1];
DPRINTF("%s: Manufacturer Code %04x\n", __func__, ret);
break;
case 1:
ret = pfl->ident[2] << 8 | pfl->ident[3];
DPRINTF("%s: Device ID Code %04x\n", __func__, ret);
break;
default:
DPRINTF("%s: Read Device Information boff=%x\n", __func__, boff);
ret = 0;
break;
}
break;
case 0x98: /* Query mode */
if (boff > pfl->cfi_len)
ret = 0;
@ -283,6 +299,10 @@ static void pflash_write(pflash_t *pfl, target_phys_addr_t offset,
DPRINTF("%s: Read status register\n", __func__);
pfl->cmd = cmd;
return;
case 0x90: /* Read Device ID */
DPRINTF("%s: Read Device information\n", __func__);
pfl->cmd = cmd;
return;
case 0x98: /* CFI query */
DPRINTF("%s: CFI query\n", __func__);
break;