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[Qemu-devel] [PATCH 1/4] pflash_cfi01: add Single Byte Program
From: |
Jean-Christophe PLAGNIOL-VILLARD |
Subject: |
[Qemu-devel] [PATCH 1/4] pflash_cfi01: add Single Byte Program |
Date: |
Sun, 16 Nov 2008 22:18:55 +0100 |
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <address@hidden>
---
hw/pflash_cfi01.c | 87 ++++++++++++++++++++++++++++++++--------------------
1 files changed, 53 insertions(+), 34 deletions(-)
diff --git a/hw/pflash_cfi01.c b/hw/pflash_cfi01.c
index 28abc16..f26684e 100644
--- a/hw/pflash_cfi01.c
+++ b/hw/pflash_cfi01.c
@@ -195,6 +195,47 @@ static void pflash_update(pflash_t *pfl, int offset,
}
}
+static void inline pflash_data_write(pflash_t *pfl, target_ulong offset,
+ uint32_t value, int width)
+{
+ uint8_t *p = pfl->storage;
+
+ DPRINTF("%s: block write offset " TARGET_FMT_lx
+ " value %x counter " TARGET_FMT_lx "\n",
+ __func__, offset, value, pfl->counter);
+ switch (width) {
+ case 1:
+ p[offset] = value;
+ pflash_update(pfl, offset, 1);
+ break;
+ case 2:
+#if defined(TARGET_WORDS_BIGENDIAN)
+ p[offset] = value >> 8;
+ p[offset + 1] = value;
+#else
+ p[offset] = value;
+ p[offset + 1] = value >> 8;
+#endif
+ pflash_update(pfl, offset, 2);
+ break;
+ case 4:
+#if defined(TARGET_WORDS_BIGENDIAN)
+ p[offset] = value >> 24;
+ p[offset + 1] = value >> 16;
+ p[offset + 2] = value >> 8;
+ p[offset + 3] = value;
+#else
+ p[offset] = value;
+ p[offset + 1] = value >> 8;
+ p[offset + 2] = value >> 16;
+ p[offset + 3] = value >> 24;
+#endif
+ pflash_update(pfl, offset, 4);
+ break;
+ }
+
+}
+
static void pflash_write (pflash_t *pfl, target_ulong offset, uint32_t value,
int width)
{
@@ -223,6 +264,10 @@ static void pflash_write (pflash_t *pfl, target_ulong
offset, uint32_t value,
switch (cmd) {
case 0x00: /* ??? */
goto reset_flash;
+ case 0x10: /* Single Byte Program */
+ case 0x40: /* Single Byte Program */
+ DPRINTF(stderr, "%s: Single Byte Program\n", __func__);
+ break;
case 0x20: /* Block erase */
p = pfl->storage;
offset &= ~(pfl->sector_len - 1);
@@ -264,6 +309,13 @@ static void pflash_write (pflash_t *pfl, target_ulong
offset, uint32_t value,
return;
case 1:
switch (pfl->cmd) {
+ case 0x10: /* Single Byte Program */
+ case 0x40: /* Single Byte Program */
+ DPRINTF("%s: Single Byte Program\n", __func__);
+ pflash_data_write(pfl, offset, value, width);
+ pfl->status |= 0x80; /* Ready! */
+ pfl->wcycle = 0;
+ break;
case 0x20: /* Block erase */
case 0x28:
if (cmd == 0xd0) { /* confirm */
@@ -308,40 +360,7 @@ static void pflash_write (pflash_t *pfl, target_ulong
offset, uint32_t value,
case 2:
switch (pfl->cmd) {
case 0xe8: /* Block write */
- p = pfl->storage;
- DPRINTF("%s: block write offset " TARGET_FMT_lx
- " value %x counter " TARGET_FMT_lx "\n",
- __func__, offset, value, pfl->counter);
- switch (width) {
- case 1:
- p[offset] = value;
- pflash_update(pfl, offset, 1);
- break;
- case 2:
-#if defined(TARGET_WORDS_BIGENDIAN)
- p[offset] = value >> 8;
- p[offset + 1] = value;
-#else
- p[offset] = value;
- p[offset + 1] = value >> 8;
-#endif
- pflash_update(pfl, offset, 2);
- break;
- case 4:
-#if defined(TARGET_WORDS_BIGENDIAN)
- p[offset] = value >> 24;
- p[offset + 1] = value >> 16;
- p[offset + 2] = value >> 8;
- p[offset + 3] = value;
-#else
- p[offset] = value;
- p[offset + 1] = value >> 8;
- p[offset + 2] = value >> 16;
- p[offset + 3] = value >> 24;
-#endif
- pflash_update(pfl, offset, 4);
- break;
- }
+ pflash_data_write(pfl, offset, value, width);
pfl->status |= 0x80;
--
1.5.6.5