diff options
Diffstat (limited to 'board/oxc/oxc.c')
| -rw-r--r-- | board/oxc/oxc.c | 56 |
1 files changed, 15 insertions, 41 deletions
diff --git a/board/oxc/oxc.c b/board/oxc/oxc.c index 0d6fc8536..8ac0e79a0 100644 --- a/board/oxc/oxc.c +++ b/board/oxc/oxc.c @@ -35,50 +35,24 @@ int checkboard (void) long int initdram (int board_type) { #ifndef CFG_RAMBOOT - int i, cnt; - volatile uchar * base= CFG_SDRAM_BASE; - volatile ulong * addr; - ulong save[32]; - ulong val, ret = 0; + long size; + long new_bank0_end; + long mear1; + long emear1; - for (i=0, cnt=(CFG_MAX_RAM_SIZE / sizeof(long)) >> 1; cnt > 0; cnt >>= 1) { - addr = (volatile ulong *)base + cnt; - save[i++] = *addr; - *addr = ~cnt; - } - - addr = (volatile ulong *)base; - save[i] = *addr; - *addr = 0; - - if (*addr != 0) { - *addr = save[i]; - goto Done; - } + size = get_ram_size(CFG_SDRAM_BASE, CFG_MAX_RAM_SIZE); - for (cnt = 1; cnt <= CFG_MAX_RAM_SIZE / sizeof(long); cnt <<= 1) { - addr = (volatile ulong *)base + cnt; - val = *addr; - *addr = save[--i]; - if (val != ~cnt) { - ulong new_bank0_end = cnt * sizeof(long) - 1; - ulong mear1 = mpc824x_mpc107_getreg(MEAR1); - ulong emear1 = mpc824x_mpc107_getreg(EMEAR1); - mear1 = (mear1 & 0xFFFFFF00) | - ((new_bank0_end & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT); - emear1 = (emear1 & 0xFFFFFF00) | - ((new_bank0_end & MICR_ADDR_MASK) >> MICR_EADDR_SHIFT); - mpc824x_mpc107_setreg(MEAR1, mear1); - mpc824x_mpc107_setreg(EMEAR1, emear1); - - ret = cnt * sizeof(long); - goto Done; - } - } + new_bank0_end = size - 1; + mear1 = mpc824x_mpc107_getreg(MEAR1); + emear1 = mpc824x_mpc107_getreg(EMEAR1); + mear1 = (mear1 & 0xFFFFFF00) | + ((new_bank0_end & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT); + emear1 = (emear1 & 0xFFFFFF00) | + ((new_bank0_end & MICR_ADDR_MASK) >> MICR_EADDR_SHIFT); + mpc824x_mpc107_setreg(MEAR1, mear1); + mpc824x_mpc107_setreg(EMEAR1, emear1); - ret = CFG_MAX_RAM_SIZE; -Done: - return ret; + return (size); #else /* if U-Boot starts from RAM, then suppose we have 16Mb of RAM */ return (16 << 20); |