Consolidate more jedec standard code
Corresponding to flashrom svn r15 and coreboot v2 svn r1457.
diff --git a/jedec.c b/jedec.c
index 2f153db..d7f2bef 100644
--- a/jedec.c
+++ b/jedec.c
@@ -28,116 +28,176 @@
#include "flash.h"
#include "jedec.h"
-int probe_jedec (struct flashchip * flash)
+int probe_jedec(struct flashchip *flash)
{
- volatile char * bios = flash->virt_addr;
- unsigned char id1, id2;
+ volatile char *bios = flash->virt_addr;
+ unsigned char id1, id2;
- *(volatile char *) (bios + 0x5555) = 0xAA;
- myusec_delay(10);
- *(volatile char *) (bios + 0x2AAA) = 0x55;
- myusec_delay(10);
- *(volatile char *) (bios + 0x5555) = 0x90;
- myusec_delay(10);
+ /* Issue JEDEC Product ID Entry command */
+ *(volatile char *) (bios + 0x5555) = 0xAA;
+ myusec_delay(10);
+ *(volatile char *) (bios + 0x2AAA) = 0x55;
+ myusec_delay(10);
+ *(volatile char *) (bios + 0x5555) = 0x90;
+ myusec_delay(10);
- id1 = *(volatile unsigned char *) bios;
- id2 = *(volatile unsigned char *) (bios + 0x01);
+ /* Read product ID */
+ id1 = *(volatile unsigned char *) bios;
+ id2 = *(volatile unsigned char *) (bios + 0x01);
- *(volatile char *) (bios + 0x5555) = 0xAA;
- myusec_delay(10);
- *(volatile char *) (bios + 0x2AAA) = 0x55;
- myusec_delay(10);
- *(volatile char *) (bios + 0x5555) = 0xF0;
- myusec_delay(10);
+ /* Issue JEDEC Product ID Exit command */
+ *(volatile char *) (bios + 0x5555) = 0xAA;
+ myusec_delay(10);
+ *(volatile char *) (bios + 0x2AAA) = 0x55;
+ myusec_delay(10);
+ *(volatile char *) (bios + 0x5555) = 0xF0;
+ myusec_delay(10);
printf("%s: id1 0x%x, id2 0x%x\n", __FUNCTION__, id1, id2);
- if (id1 == flash->manufacture_id && id2 == flash->model_id)
- return 1;
+ if (id1 == flash->manufacture_id && id2 == flash->model_id)
+ return 1;
- return 0;
+ return 0;
}
-int erase_sector_jedec (volatile char * bios, unsigned int page)
+int erase_sector_jedec(volatile char *bios, unsigned int page)
{
- /* Chip erase function does not exist for LPC mode on 49lf040.
- * Erase sector-by-sector instead. */
volatile unsigned char *Temp;
- /* Issue the Sector Erase command to 40LF040 */
- Temp = bios + 0x5555; /* set up address to be C000:5555h */
- *Temp = 0xAA; /* write data 0xAA to the address */
+ /* Issue the Sector Erase command */
+ Temp = bios + 0x5555; /* set up address to be BASE:5555h */
+ *Temp = 0xAA; /* write data 0xAA to the address */
myusec_delay(10);
- Temp = bios + 0x2AAA; /* set up address to be C000:2AAAh */
- *Temp = 0x55; /* write data 0x55 to the address */
+ Temp = bios + 0x2AAA; /* set up address to be BASE:2AAAh */
+ *Temp = 0x55; /* write data 0x55 to the address */
myusec_delay(10);
- Temp = bios + 0x5555; /* set up address to be C000:5555h */
- *Temp = 0x80; /* write data 0x80 to the address */
+ Temp = bios + 0x5555; /* set up address to be BASE:5555h */
+ *Temp = 0x80; /* write data 0x80 to the address */
myusec_delay(10);
- Temp = bios + 0x5555; /* set up address to be C000:5555h */
- *Temp = 0xAA; /* write data 0xAA to the address */
+ Temp = bios + 0x5555; /* set up address to be BASE:5555h */
+ *Temp = 0xAA; /* write data 0xAA to the address */
myusec_delay(10);
- Temp = bios + 0x2AAA; /* set up address to be C000:2AAAh */
- *Temp = 0x55; /* write data 0x55 to the address */
+ Temp = bios + 0x2AAA; /* set up address to be BASE:2AAAh */
+ *Temp = 0x55; /* write data 0x55 to the address */
myusec_delay(10);
- Temp = bios + page; /* set up address to be the current sector */
- *Temp = 0x30; /* write data 0x30 to the address */
-
+ Temp = bios + page; /* set up address to be the current sector */
+ *Temp = 0x30; /* write data 0x30 to the address */
+ myusec_delay(10);
+
/* wait for Toggle bit ready */
toggle_ready_jedec(bios);
- return(0);
+ return (0);
}
-int erase_jedec (struct flashchip * flash)
+int erase_chip_jedec(struct flashchip *flash)
{
- volatile unsigned char * bios = flash->virt_addr;
+ volatile unsigned char *bios = flash->virt_addr;
volatile unsigned char *Temp;
- /* Issue the Sector Erase command to 39SF020 */
- Temp = bios + 0x5555; /* set up address to be C000:5555h */
- *Temp = 0xAA; /* write data 0xAA to the address */
+ /* Issue the JEDEC Chip Erase command */
+ Temp = bios + 0x5555; /* set up address to be BASE:5555h */
+ *Temp = 0xAA; /* write data 0xAA to the address */
myusec_delay(10);
- Temp = bios + 0x2AAA; /* set up address to be C000:2AAAh */
- *Temp = 0x55; /* write data 0x55 to the address */
+ Temp = bios + 0x2AAA; /* set up address to be BASE:2AAAh */
+ *Temp = 0x55; /* write data 0x55 to the address */
myusec_delay(10);
- Temp = bios + 0x5555; /* set up address to be C000:5555h */
- *Temp = 0x80; /* write data 0x80 to the address */
+ Temp = bios + 0x5555; /* set up address to be BASE:5555h */
+ *Temp = 0x80; /* write data 0x80 to the address */
myusec_delay(10);
- Temp = bios + 0x5555; /* set up address to be C000:5555h */
- *Temp = 0xAA; /* write data 0xAA to the address */
+ Temp = bios + 0x5555; /* set up address to be BASE:5555h */
+ *Temp = 0xAA; /* write data 0xAA to the address */
myusec_delay(10);
- Temp = bios + 0x2AAA; /* set up address to be C000:2AAAh */
- *Temp = 0x55; /* write data 0x55 to the address */
+ Temp = bios + 0x2AAA; /* set up address to be BASE:2AAAh */
+ *Temp = 0x55; /* write data 0x55 to the address */
myusec_delay(10);
- Temp = bios + 0x5555; /* set up address to be C000:5555h */
- *Temp = 0x10; /* write data 0x55 to the address */
+ Temp = bios + 0x5555; /* set up address to be BASEy:5555h */
+ *Temp = 0x10; /* write data 0x10 to the address */
myusec_delay(10);
toggle_ready_jedec(bios);
- return(0);
+ return (0);
}
-int write_jedec (struct flashchip * flash, unsigned char * buf)
+void write_page_jedec(volatile char *bios, char *src, volatile char *dst,
+ int page_size)
{
int i;
- int total_size = flash->total_size *1024, page_size = flash->page_size;
- volatile unsigned char * bios = flash->virt_addr;
- erase_jedec (flash);
- if (*bios != (unsigned char ) 0xff) {
+ /* Issue JEDEC Data Unprotect comand */
+ *(volatile char *) (bios + 0x5555) = 0xAA;
+ *(volatile char *) (bios + 0x2AAA) = 0x55;
+ *(volatile char *) (bios + 0x5555) = 0xA0;
+
+ for (i = 0; i < page_size; i++) {
+ /* transfer data from source to destination */
+ *dst++ = *src++;
+ }
+
+ usleep(100);
+ toggle_ready_jedec(dst - 1);
+}
+
+int write_sector_jedec(volatile char *bios,
+ unsigned char *src,
+ volatile unsigned char *dst, unsigned int page_size)
+{
+ int i;
+ 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 (-1);
+ }
+ /* transfer data from source to destination */
+ if (*src == 0xFF) {
+ dst++, src++;
+ /* If the data is 0xFF, don't program it */
+ continue;
+ }
+ /* Issue JEDEC Byte Program command */
+ 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%lx val 0x%x src 0x%x\n",
+ (unsigned long) dst, *dst, *src);
+ dst++, src++;
+ }
+
+ return (0);
+}
+
+int write_jedec(struct flashchip *flash, unsigned char *buf)
+{
+ int i;
+ int total_size = flash->total_size * 1024, page_size =
+ flash->page_size;
+ volatile unsigned char *bios = flash->virt_addr;
+
+ erase_chip_jedec(flash);
+ if (*bios != (unsigned char) 0xff) {
printf("ERASE FAILED\n");
return -1;
}
- printf ("Programming Page: ");
- for (i = 0; i < total_size/page_size; i++) {
- printf ("%04d at address: 0x%08x", i, i * page_size);
- write_page_jedec(bios, buf + i * page_size, bios + i * page_size,
- page_size);
- printf ("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b");
+ printf("Programming Page: ");
+ for (i = 0; i < total_size / page_size; i++) {
+ printf("%04d at address: 0x%08x", i, i * page_size);
+ write_page_jedec(bios, buf + i * page_size,
+ bios + i * page_size, page_size);
+ printf
+ ("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b");
}
printf("\n");
- protect_jedec (bios);
+ protect_jedec(bios);
- return(0);
+ return (0);
}