omap_gpmc: change nandecc command
With uppcoming BCH support on OMAP devices we need to decide between differnt
algorithms when switching the ECC engine. Currently we support 1-bit hammign
and 8-bit BCH on HW backend.
In order to switch between differnet ECC algorithms we need to change the
interface of omap_nand_switch_ecc() also.
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com>
Cc: Tom Rini <trini@ti.com>
Cc: Thomas Weber <thomas.weber.linux@googlemail.com>
diff --git a/arch/arm/cpu/armv7/omap3/board.c b/arch/arm/cpu/armv7/omap3/board.c
index c6d9a42..b72fadc 100644
--- a/arch/arm/cpu/armv7/omap3/board.c
+++ b/arch/arm/cpu/armv7/omap3/board.c
@@ -328,14 +328,25 @@
*****************************************************************************/
static int do_switch_ecc(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
{
- if (argc != 2)
+ if (argc < 2 || argc > 3)
goto usage;
- if (strncmp(argv[1], "hw", 2) == 0)
- omap_nand_switch_ecc(1);
- else if (strncmp(argv[1], "sw", 2) == 0)
- omap_nand_switch_ecc(0);
- else
+
+ if (strncmp(argv[1], "hw", 2) == 0) {
+ if (argc == 2) {
+ omap_nand_switch_ecc(1, 1);
+ } else {
+ if (strncmp(argv[2], "hamming", 7) == 0)
+ omap_nand_switch_ecc(1, 1);
+ else if (strncmp(argv[2], "bch8", 4) == 0)
+ omap_nand_switch_ecc(1, 8);
+ else
+ goto usage;
+ }
+ } else if (strncmp(argv[1], "sw", 2) == 0) {
+ omap_nand_switch_ecc(0, 0);
+ } else {
goto usage;
+ }
return 0;
@@ -345,9 +356,13 @@
}
U_BOOT_CMD(
- nandecc, 2, 1, do_switch_ecc,
+ nandecc, 3, 1, do_switch_ecc,
"switch OMAP3 NAND ECC calculation algorithm",
- "[hw/sw] - Switch between NAND hardware (hw) or software (sw) ecc algorithm"
+ "hw [hamming|bch8] - Switch between NAND hardware 1-bit hamming and"
+ " 8-bit BCH\n"
+ " ecc calculation (second parameter may"
+ " be omitted).\n"
+ "nandecc sw - Switch to NAND software ecc algorithm."
);
#endif /* CONFIG_NAND_OMAP_GPMC & !CONFIG_SPL_BUILD */