From 8a805df13615667ebdcc9f3a3a6fbf6c7778a992 Mon Sep 17 00:00:00 2001 From: Stefan Roese Date: Thu, 16 Sep 2010 14:01:53 +0200 Subject: 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 Tested-by: Detlev Zundel Cc: Gerald Van Baren Cc: Wolfgang Denk --- board/amcc/ebony/flash.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) (limited to 'board/amcc/ebony') 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 #include #include +#include #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; -- cgit v1.2.3