Add support for the Sharp LH28F008BJT-BTLZ1 chip
Tested by Mattias Mattsson <vitplister@gmail.com> on a PowerPC box.
Corresponding to flashrom svn r1420.
Signed-off-by: Mattias Mattsson <vitplister@gmail.com>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Uwe Hermann <uwe@hermann-uwe.de>
diff --git a/82802ab.c b/82802ab.c
index cd59c07..ff2f535 100644
--- a/82802ab.c
+++ b/82802ab.c
@@ -208,3 +208,58 @@
return 0;
}
+
+int unlock_lh28f008bjt(struct flashchip *flash)
+{
+ chipaddr bios = flash->virtual_memory;
+ uint8_t mcfg, bcfg;
+ uint8_t need_unlock = 0, can_unlock = 0;
+ int i;
+
+ /* Wait if chip is busy */
+ wait_82802ab(flash);
+
+ /* Read identifier codes */
+ chip_writeb(0x90, bios);
+
+ /* Read master lock-bit */
+ mcfg = chip_readb(bios + 0x3);
+ msg_cdbg("master lock is ");
+ if (mcfg) {
+ msg_cdbg("locked!\n");
+ } else {
+ msg_cdbg("unlocked!\n");
+ can_unlock = 1;
+ }
+
+ /* Read block lock-bits, 8 * 8 KB + 15 * 64 KB */
+ for (i = 0; i < flash->total_size * 1024;
+ i += (i >= (64 * 1024) ? 64 * 1024 : 8 * 1024)) {
+ bcfg = chip_readb(bios + i + 2); /* read block lock config */
+ msg_cdbg("block lock at %06x is %slocked!\n", i,
+ bcfg ? "" : "un");
+ if (bcfg)
+ need_unlock = 1;
+ }
+
+ /* Reset chip */
+ chip_writeb(0xFF, bios);
+
+ /* Unlock: clear block lock-bits, if needed */
+ if (can_unlock && need_unlock) {
+ msg_cdbg("Unlock: ");
+ chip_writeb(0x60, bios);
+ chip_writeb(0xD0, bios);
+ chip_writeb(0xFF, bios);
+ wait_82802ab(flash);
+ msg_cdbg("Done!\n");
+ }
+
+ /* Error: master locked or a block is locked */
+ if (!can_unlock && need_unlock) {
+ msg_cerr("At least one block is locked and lockdown is active!\n");
+ return -1;
+ }
+
+ return 0;
+}