openwrt/target/linux/bcm63xx/patches-5.15/400-bcm963xx_flashmap.patch

From a4d005c91d403d9f3d0272db6cc46202c06ec774 Mon Sep 17 00:00:00 2001
From: Axel Gembe <ago@bastart.eu.org>
Date: Mon, 12 May 2008 18:54:09 +0200
Subject: [PATCH] bcm963xx: flashmap support

Signed-off-by: Axel Gembe <ago@bastart.eu.org>
---
 arch/mips/bcm63xx/boards/board_bcm963xx.c |   19 +----------------
 drivers/mtd/maps/bcm963xx-flash.c         |   32 ++++++++++++++++++++++++----
 drivers/mtd/redboot.c                     |   13 +++++++++--
 3 files changed, 38 insertions(+), 26 deletions(-)

--- a/arch/mips/bcm63xx/dev-flash.c
+++ b/arch/mips/bcm63xx/dev-flash.c
@@ -35,7 +35,7 @@ static struct mtd_partition mtd_partitio
 	}
 };
 
-static const char *bcm63xx_part_types[] = { "bcm63xxpart", NULL };
+static const char *bcm63xx_part_types[] = { "bcm63xxpart", "RedBoot", NULL };
 
 static struct physmap_flash_data flash_data = {
 	.width			= 2,
--- a/drivers/mtd/parsers/redboot.c
+++ b/drivers/mtd/parsers/redboot.c
@@ -85,6 +85,7 @@ static int parse_redboot_partitions(stru
 	int nulllen = 0;
 	int numslots;
 	unsigned long offset;
+	unsigned long fis_origin = 0;
 #ifdef CONFIG_MTD_REDBOOT_PARTS_UNALLOCATED
 	static char nullstring[] = "unallocated";
 #endif
@@ -190,6 +191,16 @@ nogood:
 		goto out;
 	}
 
+	if (data && data->origin) {
+		fis_origin = data->origin;
+	} else {
+		for (i = 0; i < numslots; i++) {
+			if (!strncmp(buf[i].name, "RedBoot", 8)) {
+				fis_origin = (buf[i].flash_base & ((master->size << 1) - 1));
+			}
+		}
+	}
+
 	for (i = 0; i < numslots; i++) {
 		struct fis_list *new_fl, **prev;
 
@@ -210,10 +221,10 @@ nogood:
 			goto out;
 		}
 		new_fl->img = &buf[i];
-		if (data && data->origin)
-			buf[i].flash_base -= data->origin;
-		else
-			buf[i].flash_base &= master->size - 1;
+		if (fis_origin)
+			buf[i].flash_base -= fis_origin;
+
+		buf[i].flash_base &= (master->size << 1) - 1;
 
 		/* I'm sure the JFFS2 code has done me permanent damage.
 		 * I now think the following is _normal_