From 6041bcda7ac8c8a7470bba58e8b26cdfd5746679 Mon Sep 17 00:00:00 2001
From: Ollie Lho <ollie@sis.com.tw>
Date: Thu, 18 Jul 2002 03:32:00 +0000
Subject: [PATCH] Add sst39vf020 support
Corresponding to coreboot v1 svn r606.
---
flash.h | 1 +
flash_rom.c | 2 ++
sst39sf020.c | 29 +++++++++++++++--------------
3 files changed, 18 insertions(+), 14 deletions(-)
diff --git a/flash.h b/flash.h
index 286e219..959ef0b 100644
--- a/flash.h
+++ b/flash.h
@@ -28,6 +28,7 @@ struct flashchip {
#define SST_29EE020A 0x10 /* SST 29EE020 device code */
#define SST_28SF040 0x04 /* SST 29EE040 device code */
#define SST_39SF020 0xB6 /* SST 39SF020 device */
+#define SST_39VF020 0xD6 /* SST 39SF020 device */
#define WINBOND_ID 0xDA /* Winbond Manufacture ID code */
#define W_29C020C 0x45 /* Winbond w29c020c device code*/
diff --git a/flash_rom.c b/flash_rom.c
index 8f05c25..fe1bdf7 100644
--- a/flash_rom.c
+++ b/flash_rom.c
@@ -50,6 +50,8 @@ struct flashchip flashchips[] = {
probe_28sf040, erase_28sf040, write_28sf040},
{"SST39SF020A", SST_ID, SST_39SF020, NULL, 256, 4096,
probe_39sf020, erase_39sf020, write_39sf020},
+ {"SST39VF020", SST_ID, SST_39VF020, NULL, 256, 4096,
+ probe_39sf020, erase_39sf020, write_39sf020},
{"W29C020C", WINBOND_ID, W_29C020C, NULL, 256, 128,
probe_jedec, erase_jedec, write_jedec},
{"M29F400BT", ST_ID, ST_M29F400BT , NULL, 512, 64*1024,
diff --git a/sst39sf020.c b/sst39sf020.c
index 49e695f..48a1d59 100644
--- a/sst39sf020.c
+++ b/sst39sf020.c
@@ -81,26 +81,27 @@ static __inline__ write_sector_39sf020(volatile char * bios,
volatile char *Temp;
for (i = 0; i < page_size; i++) {
- if (*dst != 0xff) {
- printf("FATAL: dst %p not erased (val 0x%x\n", dst, *dst);
- return;
- }
+ if (*dst != 0xff) {
+ printf("FATAL: dst %p not erased (val 0x%x\n", dst, *dst);
+ return;
+ }
/* transfer data from source to destination */
if (*src == 0xFF) {
dst++, src++;
/* If the data is 0xFF, don't program it */
continue;
}
- Temp = (bios + 0x5555);
- *Temp = 0xAA;
- Temp = bios + 0x2AAA;
- *Temp = 0x55;
- Temp = bios + 0x5555;
- *Temp = 0xA0;
+ Temp = (bios + 0x5555);
+ *Temp = 0xAA;
+ Temp = bios + 0x2AAA;
+ *Temp = 0x55;
+ Temp = bios + 0x5555;
+ *Temp = 0xA0;
*dst = *src;
toggle_ready_jedec(bios);
- if (*dst != *src) printf("BAD! dst 0x%x val 0x%x src 0x%x\n",
- dst, *dst, *src);
+ if (*dst != *src)
+ printf("BAD! dst 0x%x val 0x%x src 0x%x\n",
+ dst, *dst, *src);
dst++, src++;
}
}
@@ -137,9 +138,9 @@ int probe_39sf020 (struct flashchip * flash)
int erase_39sf020 (struct flashchip * flash)
{
volatile unsigned char * bios = flash->virt_addr;
- volatile unsigned char *Temp;
+ volatile unsigned char *Temp;
+
/* Issue the Sector Erase command to 39SF020 */
- printf(__FUNCTION__ " bios is %p\n", bios);
Temp = bios + 0x5555; /* set up address to be C000:5555h */
*Temp = 0xAA; /* write data 0xAA to the address */
myusec_delay(10);
--
GitLab