[ARM] 4469/1: ANUBIS: large page NAND support

Add support for the partition layour used on the
revision B modules which ship with large page NAND
flash as default.

The differnce between the old and new layouts is that
the large page devices use 128KiB blocks, so the
initial loader partition now ends at 128KiB boundary
pushing the begining of partition 1 up. The rest of
the partitions are in the same place as the small page
NAND devices.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

diff --git a/arch/arm/mach-s3c2440/mach-anubis.c b/arch/arm/mach-s3c2440/mach-anubis.c
index 53675aa516f30b208ee5afcc6897273f69436c58..29c163d300d4cc9f78a4f35654e3559b92497efc 100644 (file)
--- a/arch/arm/mach-s3c2440/mach-anubis.c
+++ b/arch/arm/mach-s3c2440/mach-anubis.c
@@ -158,6 +158,29 @@ static struct mtd_partition anubis_default_nand_part[] = {
        }
 };
 
+static struct mtd_partition anubis_default_nand_part_large[] = {
+       [0] = {
+               .name   = "Boot Agent",
+               .size   = SZ_128K,
+               .offset = 0,
+       },
+       [1] = {
+               .name   = "/boot",
+               .size   = SZ_4M - SZ_128K,
+               .offset = SZ_128K,
+       },
+       [2] = {
+               .name   = "user1",
+               .offset = SZ_4M,
+               .size   = SZ_32M - SZ_4M,
+       },
+       [3] = {
+               .name   = "user2",
+               .offset = SZ_32M,
+               .size   = MTDPART_SIZ_FULL,
+       }
+};
+
 /* the Anubis has 3 selectable slots for nand-flash, the two
  * on-board chip areas, as well as the external slot.
  *
@@ -409,8 +432,17 @@ static void __init anubis_map_io(void)
        s3c24xx_init_clocks(0);
        s3c24xx_init_uarts(anubis_uartcfgs, ARRAY_SIZE(anubis_uartcfgs));
 
-       /* ensure that the GPIO is setup */
-       s3c2410_gpio_setpin(S3C2410_GPA0, 1);
+       /* check for the newer revision boards with large page nand */
+
+       if ((__raw_readb(ANUBIS_VA_IDREG) & ANUBIS_IDREG_REVMASK) >= 4) {
+               printk(KERN_INFO "ANUBIS-B detected (revision %d)\n",
+                      __raw_readb(ANUBIS_VA_IDREG) & ANUBIS_IDREG_REVMASK);
+               anubis_nand_sets[0].partitions = anubis_default_nand_part_large;
+               anubis_nand_sets[0].nr_partitions = ARRAY_SIZE(anubis_default_nand_part_large);
+       } else {
+               /* ensure that the GPIO is setup */
+               s3c2410_gpio_setpin(S3C2410_GPA0, 1);
+       }
 }
 
 static void __init anubis_init(void)