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authorStefan Roese <sr@denx.de>2010-09-16 14:01:53 +0200
committerStefan Roese <sr@denx.de>2010-09-23 08:49:49 +0200
commit8a805df13615667ebdcc9f3a3a6fbf6c7778a992 (patch)
tree67e61ba7679d82a64dbcb3d55344a31a22a7e6da /board
parentab25e880ca9d508b7a807aa969105af32c3e6e51 (diff)
downloadu-boot-linaro-natty-8a805df13615667ebdcc9f3a3a6fbf6c7778a992.tar.gz
ppc4xx/fdt/flash: Change fdt_fixup_nor_flash_node() to not rely on cs size
This patch changes the behaviour of the fdt_fixup_nor_flash_node() function. Now it doesn't patch the size of the "reg" property with the chip-select size, but with the size returned from the new function flash_get_bank_size(). This function will return per weak default the flash size of the bank (bank = chip-select numer) detected by the flash driver. If this does not fit your needs, this function may be overridden by a board specific one. For this the parameters needed to be changed. So I intentionally squashed the PPC4xx stuff using this routine into this patch. Otherwise it would not be git-bisectable anymore. The board specific function for the AMCC/APM Ebony eval board is now included in this patch version. Signed-off-by: Stefan Roese <sr@denx.de> Tested-by: Detlev Zundel <dzu@denx.de> Cc: Gerald Van Baren <vanbaren@cideas.com> Cc: Wolfgang Denk <wd@denx.de>
Diffstat (limited to 'board')
-rw-r--r--board/amcc/ebony/flash.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/board/amcc/ebony/flash.c b/board/amcc/ebony/flash.c
index 8fe3ba1b8..79d2c4c30 100644
--- a/board/amcc/ebony/flash.c
+++ b/board/amcc/ebony/flash.c
@@ -34,6 +34,7 @@
#include <common.h>
#include <ppc4xx.h>
#include <asm/processor.h>
+#include <asm/io.h>
#undef DEBUG
#ifdef DEBUG
@@ -71,6 +72,36 @@ static unsigned long flash_addr_table[8][CONFIG_SYS_MAX_FLASH_BANKS] = {
*/
static ulong flash_get_size(vu_long * addr, flash_info_t * info);
+/*
+ * Override the weak default mapping function with a board specific one
+ */
+u32 flash_get_bank_size(int cs, int idx)
+{
+ u8 reg = in_8((void *)CONFIG_SYS_FPGA_BASE);
+
+ if ((reg & BOOT_SMALL_FLASH) && !(reg & FLASH_ONBD_N)) {
+ /*
+ * cs0: small flash (512KiB)
+ * cs2: 2 * big flash (2 * 2MiB)
+ */
+ if (cs == 0)
+ return flash_info[2].size;
+ if (cs == 2)
+ return flash_info[0].size + flash_info[1].size;
+ } else {
+ /*
+ * cs0: 2 * big flash (2 * 2MiB)
+ * cs2: small flash (512KiB)
+ */
+ if (cs == 0)
+ return flash_info[0].size + flash_info[1].size;
+ if (cs == 2)
+ return flash_info[2].size;
+ }
+
+ return 0;
+}
+
unsigned long flash_init(void)
{
unsigned long total_b = 0;