bcm63xx: add linux v5.15 support

[openwrt/staging/ldir.git] / target / linux / bcm63xx / patches-5.15 / 400-bcm963xx_flashmap.patch

diff --git a/target/linux/bcm63xx/patches-5.15/400-bcm963xx_flashmap.patch b/target/linux/bcm63xx/patches-5.15/400-bcm963xx_flashmap.patch
new file mode 100644 (file)
index 0000000..af05ab2
--- /dev/null
+++ b/target/linux/bcm63xx/patches-5.15/400-bcm963xx_flashmap.patch
@@ -0,0 +1,65 @@
+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
+@@ -84,6 +84,7 @@ 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
+@@ -189,6 +190,16 @@ 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;
+ 
+@@ -209,10 +220,10 @@ 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_