Add support for the PMC Pm29F002T/B chips

I sucessfully tested all operations on a Pm29F002T chip. The Pm29F002B is
untested but I assume it should also work.

Corresponding to flashrom svn r590.

Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>

1 files changed, 53 insertions, 0 deletions

diff --git a/pm29f002.c b/pm29f002.c
new file mode 100644
index 0000000..374582b
--- /dev/null
+++ b/pm29f002.c
@@ -0,0 +1,53 @@
+/*
+ * This file is part of the flashrom project.
+ *
+ * Copyright (C) 2009 Uwe Hermann <uwe@hermann-uwe.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
+ */
+
+#include "flash.h"
+
+int write_pm29f002(struct flashchip *flash, uint8_t *buf)
+{
+	int i, total_size = flash->total_size * 1024;
+	chipaddr bios = flash->virtual_memory;
+	chipaddr dst = bios;
+
+	/* Pm29F002T/B use the same erase method... */
+	erase_29f040b(flash);
+
+	printf("Programming page: ");
+	for (i = 0; i < total_size; i++) {
+		if ((i & 0xfff) == 0)
+			printf("address: 0x%08lx", (unsigned long)i);
+
+		/* Pm29F002T/B only support byte-wise programming. */
+		chip_writeb(0xAA, bios + 0x555);
+		chip_writeb(0x55, bios + 0x2AA);
+		chip_writeb(0xA0, bios + 0x555);
+		chip_writeb(*buf++, dst++);
+
+		/* Wait for Toggle bit ready. */
+		toggle_ready_jedec(dst);
+
+		if ((i & 0xfff) == 0)
+			printf("\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b");
+	}
+
+	printf("\n");
+
+	return 0;
+}