On some boards upper 4 bits of i2c boot input data (register 0) are inverted. Information which bits are inverted is stored in register 2.
So invert read input data back according to register 2 prior processing them. This fixes printing "rom_loc: value" line during booting.
Signed-off-by: Pali Rohár pali@kernel.org --- Changes in v2: * Use register 2 for detecting which bits needs to be inverted --- board/freescale/p1_p2_rdb_pc/p1_p2_rdb_pc.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/board/freescale/p1_p2_rdb_pc/p1_p2_rdb_pc.c b/board/freescale/p1_p2_rdb_pc/p1_p2_rdb_pc.c index 29502a5c05c2..cdbff03ac45c 100644 --- a/board/freescale/p1_p2_rdb_pc/p1_p2_rdb_pc.c +++ b/board/freescale/p1_p2_rdb_pc/p1_p2_rdb_pc.c @@ -164,7 +164,7 @@ int checkboard(void) { struct cpld_data *cpld_data = (void *)(CONFIG_SYS_CPLD_BASE); ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR); - u8 in, out, io_config, val; + u8 in, out, invert, io_config, val; int bus_num = CONFIG_SYS_SPD_BUS_NUM;
printf("Board: %s CPLD: V%d.%d PCBA: V%d.0\n", CONFIG_BOARDNAME, @@ -187,6 +187,7 @@ int checkboard(void)
if (dm_i2c_read(dev, 0, &in, 1) < 0 || dm_i2c_read(dev, 1, &out, 1) < 0 || + dm_i2c_read(dev, 2, &invert, 1) < 0 || dm_i2c_read(dev, 3, &io_config, 1) < 0) { printf("Error reading i2c boot information!\n"); return 0; /* Don't want to hang() on this error */ @@ -196,13 +197,14 @@ int checkboard(void)
if (i2c_read(CONFIG_SYS_I2C_PCA9557_ADDR, 0, 1, &in, 1) < 0 || i2c_read(CONFIG_SYS_I2C_PCA9557_ADDR, 1, 1, &out, 1) < 0 || + i2c_read(CONFIG_SYS_I2C_PCA9557_ADDR, 2, 1, &invert, 1) < 0 || i2c_read(CONFIG_SYS_I2C_PCA9557_ADDR, 3, 1, &io_config, 1) < 0) { printf("Error reading i2c boot information!\n"); return 0; /* Don't want to hang() on this error */ } #endif
- val = (in & io_config) | (out & (~io_config)); + val = ((in ^ invert) & io_config) | (out & (~io_config));
puts("rom_loc: "); if ((val & (~__SW_BOOT_MASK)) == __SW_BOOT_SD) {