Add a common get_ram_size() function and modify the the
board-specific files to invoke that common implementation.
diff --git a/board/pn62/pn62.c b/board/pn62/pn62.c
index 9b1fc00..c0111dc 100644
--- a/board/pn62/pn62.c
+++ b/board/pn62/pn62.c
@@ -76,55 +76,26 @@
long int initdram (int board_type)
{
- 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;
show_startup_phase (2);
- 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;
- }
+ size = get_ram_size(CFG_SDRAM_BASE, CFG_MAX_RAM_SIZE);
- addr = (volatile ulong *) base;
- save[i] = *addr;
- *addr = 0;
-
- if (*addr != 0) {
- *addr = save[i];
- goto Done;
- }
-
- 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:
- show_startup_phase (3);
- return ret;
+ return (size);
}
/*