[ARM] 4470/2: OSIRIS: large page NAND support

[deliverable/linux.git] / arch / arm / mach-s3c2440 / mach-osiris.c

diff --git a/arch/arm/mach-s3c2440/mach-osiris.c b/arch/arm/mach-s3c2440/mach-osiris.c
index 15811601f03db435a5cb7f54db6ee88a340876c4..89f4c9c5777b324ca4f603f4fdeb5ed6dabb2473 100644 (file)
--- a/arch/arm/mach-s3c2440/mach-osiris.c
+++ b/arch/arm/mach-s3c2440/mach-osiris.c
@@ -166,6 +166,29 @@ static struct mtd_partition osiris_default_nand_part[] = {
        }
 };
 
+static struct mtd_partition osiris_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 Osiris has 3 selectable slots for nand-flash, the two
  * on-board chip areas, as well as the external slot.
  *
@@ -322,14 +345,23 @@ static void __init osiris_map_io(void)
        s3c24xx_init_clocks(0);
        s3c24xx_init_uarts(osiris_uartcfgs, ARRAY_SIZE(osiris_uartcfgs));
 
+       /* check for the newer revision boards with large page nand */
+
+       if ((__raw_readb(OSIRIS_VA_IDREG) & OSIRIS_ID_REVMASK) >= 4) {
+               printk(KERN_INFO "OSIRIS-B detected (revision %d)\n",
+                      __raw_readb(OSIRIS_VA_IDREG) & OSIRIS_ID_REVMASK);
+               osiris_nand_sets[0].partitions = osiris_default_nand_part_large;
+               osiris_nand_sets[0].nr_partitions = ARRAY_SIZE(osiris_default_nand_part_large);
+       } else {
+               /* write-protect line to the NAND */
+               s3c2410_gpio_setpin(S3C2410_GPA0, 1);
+       }
+
        /* fix bus configuration (nBE settings wrong on ABLE pre v2.20) */
 
        local_irq_save(flags);
        __raw_writel(__raw_readl(S3C2410_BWSCON) | S3C2410_BWSCON_ST1 | S3C2410_BWSCON_ST2 | S3C2410_BWSCON_ST3 | S3C2410_BWSCON_ST4 | S3C2410_BWSCON_ST5, S3C2410_BWSCON);
        local_irq_restore(flags);
-
-       /* write-protect line to the NAND */
-       s3c2410_gpio_setpin(S3C2410_GPA0, 1);
 }
 
 static void __init osiris_init(void)