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[Qemu-devel] [PATCH] pflash_cfi01: add device ID read command
From: |
Michael Walle |
Subject: |
[Qemu-devel] [PATCH] pflash_cfi01: add device ID read command |
Date: |
Sat, 1 May 2010 00:19:22 +0200 |
Add support to read manufacturer and device ID. For everything else (eg.
lock bits) 0 is returned.
---
hw/pflash_cfi01.c | 20 ++++++++++++++++++++
1 files changed, 20 insertions(+), 0 deletions(-)
diff --git a/hw/pflash_cfi01.c b/hw/pflash_cfi01.c
index dfdced9..2d30968 100644
--- a/hw/pflash_cfi01.c
+++ b/hw/pflash_cfi01.c
@@ -165,6 +165,22 @@ 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;
@@ -290,6 +306,10 @@ 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;
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