Introduce spi_block_erase_db()
Used for page erase on some chips (e.g. Numonyx M45PE and
Sanyo LF25FW series).
Corresponding to flashrom svn r1682.
Signed-off-by: Nikolay Nikolaev <evrinoma@gmail.com>
Reviewed-by: Steven Zakulec <spzakulec@gmail.com>
Signed-off-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
Acked-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
diff --git a/spi25.c b/spi25.c
index 4f1452e..26da13d 100644
--- a/spi25.c
+++ b/spi25.c
@@ -565,6 +565,47 @@
return 0;
}
+/* Page erase (usually 256B blocks) */
+int spi_block_erase_db(struct flashctx *flash, unsigned int addr, unsigned int blocklen)
+{
+ int result;
+ struct spi_command cmds[] = {
+ {
+ .writecnt = JEDEC_WREN_OUTSIZE,
+ .writearr = (const unsigned char[]){ JEDEC_WREN },
+ .readcnt = 0,
+ .readarr = NULL,
+ }, {
+ .writecnt = JEDEC_PE_OUTSIZE,
+ .writearr = (const unsigned char[]){
+ JEDEC_PE,
+ (addr >> 16) & 0xff,
+ (addr >> 8) & 0xff,
+ (addr & 0xff)
+ },
+ .readcnt = 0,
+ .readarr = NULL,
+ }, {
+ .writecnt = 0,
+ .writearr = NULL,
+ .readcnt = 0,
+ .readarr = NULL,
+ } };
+
+ result = spi_send_multicommand(flash, cmds);
+ if (result) {
+ msg_cerr("%s failed during command execution at address 0x%x\n", __func__, addr);
+ return result;
+ }
+
+ /* Wait until the Write-In-Progress bit is cleared.
+ * This takes up to 20 ms usually (on worn out devices up to the 0.5s range), so wait in 1 ms steps. */
+ while (spi_read_status_register(flash) & SPI_SR_WIP)
+ programmer_delay(1 * 1000);
+ /* FIXME: Check the status register for errors. */
+ return 0;
+}
+
/* Sector size is usually 4k, though Macronix eliteflash has 64k */
int spi_block_erase_20(struct flashctx *flash, unsigned int addr,
unsigned int blocklen)
@@ -745,6 +786,8 @@
return &spi_block_erase_d7;
case 0xd8:
return &spi_block_erase_d8;
+ case 0xdb:
+ return &spi_block_erase_db;
default:
msg_cinfo("%s: unknown erase opcode (0x%02x). Please report "
"this at flashrom@flashrom.org\n", __func__, opcode);