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| author | Stefan Roese <sr@denx.de> | 2010-09-16 14:01:53 +0200 |
|---|---|---|
| committer | Stefan Roese <sr@denx.de> | 2010-09-23 08:49:49 +0200 |
| commit | 8a805df13615667ebdcc9f3a3a6fbf6c7778a992 (patch) | |
| tree | 67e61ba7679d82a64dbcb3d55344a31a22a7e6da /board/amcc/ebony | |
| parent | ab25e880ca9d508b7a807aa969105af32c3e6e51 (diff) | |
| download | u-boot-imx-8a805df13615667ebdcc9f3a3a6fbf6c7778a992.zip u-boot-imx-8a805df13615667ebdcc9f3a3a6fbf6c7778a992.tar.gz u-boot-imx-8a805df13615667ebdcc9f3a3a6fbf6c7778a992.tar.bz2 | |
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/amcc/ebony')
| -rw-r--r-- | board/amcc/ebony/flash.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/board/amcc/ebony/flash.c b/board/amcc/ebony/flash.c index 8fe3ba1..79d2c4c 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; |