[flashrom] [PATCH] Hack for Gateway m275

[Michael Karcher]

Might help - this is how the native code does it.
---
 jedec.c |   32 ++++++++++++++++++++++++++------
 1 files changed, 26 insertions(+), 6 deletions(-)

diff --git a/jedec.c b/jedec.c
index 30c343f..aa32714 100644
--- a/jedec.c
+++ b/jedec.c
@@ -50,7 +50,14 @@ void toggle_ready_jedec_common(chipaddr dst, int delay)
    		programmer_delay(delay);
    	tmp2 = chip_readb(dst) & 0x40;
    	if (tmp1 == tmp2) {
-			break;
+			/* Recheck to avoid spurious results. */
+			programmer_delay(delay);
+			tmp1 = chip_readb(dst) & 0x40;
+			if (tmp1 == tmp2)
+				break;
+			msg_cdbg("Spurious toggle ready!\n");
+			/* Avoid a false positive during next loop. */
+			tmp2 = tmp1;
    	}
    	tmp1 = tmp2;
    }
@@ -300,14 +307,16 @@ int write_byte_program_jedec_common(struct flashchip *flash, uint8_t *src,
    }

retry:
+        chip_readb(bios);
    /* Issue JEDEC Byte Program command */
    start_program_jedec_common(flash, mask);

/* transfer data from source to destination */
    chip_writeb(*src, dst);
-	toggle_ready_jedec(bios);
+	toggle_ready_jedec(dst);

if (chip_readb(dst) != *src && tried++ < MAX_REFLASH_TRIES) {
+		msg_cerr("Retrying the write at 0x%lx\n", dst);
    	goto retry;
    }

@@ -364,7 +373,7 @@ retry:
    failed = verify_range(flash, src, start, page_size, NULL);

if (failed && tried++ < MAX_REFLASH_TRIES) {
-		msg_cerr("retrying.\n");
+		msg_cerr("Retrying the write at 0x%lx\n", dst);
    	goto retry;
    }
    if (failed) {
@@ -430,20 +439,31 @@ int write_jedec_1(struct flashchip *flash, uint8_t * buf)
    mask = getaddrmask(flash);

programmer_delay(10);
+#if 0
    if (erase_flash(flash)) {
    	msg_cerr("ERASE FAILED!\n");
    	return -1;
    }
+#else
+	msg_cinfo("Not erasing!\n");
+#endif
+	msg_cinfo("Checking if the to-be-written range is already erased\n");
+	if (check_erased_range(flash, 128 * 1024, 320 * 1024)) {
+		msg_cerr("Range 0x20000-0x6ffff is not in erased state!\n");
+		return -1;
+	}

-	msg_cinfo("Programming page: ");
-	for (i = 0; i < flash->total_size; i++) {
+	msg_cinfo("Programming 1k sized pages, starting at 128k, ending at 448k: ");
+	for (i = 128; i < flash->total_size - 64; i++) {
    	if ((i & 0x3) == 0)
-			msg_cinfo("address: 0x%08lx", (unsigned long)i * 1024);
+			msg_cinfo("address: 0x%08lx,", (unsigned long)i * 1024);

write_sector_jedec_common(flash, buf + i * 1024, dst + i * 1024, 1024, mask);

+#if 0
    	if ((i & 0x3) == 0)
    		msg_cinfo("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b");
+#endif
    }

msg_cinfo("DONE!\n");