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-rw-r--r--board/etin/debris/debris.c85
1 files changed, 64 insertions, 21 deletions
diff --git a/board/etin/debris/debris.c b/board/etin/debris/debris.c
index f7851b3..93c502c 100644
--- a/board/etin/debris/debris.c
+++ b/board/etin/debris/debris.c
@@ -24,6 +24,7 @@
#include <common.h>
#include <mpc824x.h>
#include <pci.h>
+#include <i2c.h>
int checkboard (void)
{
@@ -52,28 +53,70 @@ int checkflash (void)
long int initdram (int board_type)
{
- long size;
-#if 0
- long new_bank0_end;
- long mear1;
- long emear1;
-#endif
-
- size = get_ram_size(CFG_SDRAM_BASE, CFG_MAX_RAM_SIZE);
-
-#if 0
- 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);
-#endif
+ int m, row, col, bank, i;
+ unsigned long start, end;
+ uint32_t mccr1;
+ uint32_t mear1 = 0, emear1 = 0, msar1 = 0, emsar1 = 0;
+ uint32_t mear2 = 0, emear2 = 0, msar2 = 0, emsar2 = 0;
+ uint8_t mber = 0;
+
+ i2c_init(CFG_I2C_SPEED, CFG_I2C_SLAVE);
+
+ if (i2c_reg_read (0x50, 2) != 0x04) return 0; /* Memory type */
+ m = i2c_reg_read (0x50, 5); /* # of physical banks */
+ row = i2c_reg_read (0x50, 3); /* # of rows */
+ col = i2c_reg_read (0x50, 4); /* # of columns */
+ bank = i2c_reg_read (0x50, 17); /* # of logical banks */
+
+ CONFIG_READ_WORD(MCCR1, mccr1);
+ mccr1 &= 0xffff0000;
+
+ start = CFG_SDRAM_BASE;
+ end = start + (1 << (col + row + 3) ) * bank - 1;
+
+ for (i = 0; i < m; i++) {
+ mccr1 |= ((row == 13)? 2 : (bank == 4)? 0 : 3) << i * 2;
+ if (i < 4) {
+ msar1 |= ((start >> 20) & 0xff) << i * 8;
+ emsar1 |= ((start >> 28) & 0xff) << i * 8;
+ mear1 |= ((end >> 20) & 0xff) << i * 8;
+ emear1 |= ((end >> 28) & 0xff) << i * 8;
+ } else {
+ msar2 |= ((start >> 20) & 0xff) << (i-4) * 8;
+ emsar2 |= ((start >> 28) & 0xff) << (i-4) * 8;
+ mear2 |= ((end >> 20) & 0xff) << (i-4) * 8;
+ emear2 |= ((end >> 28) & 0xff) << (i-4) * 8;
+ }
+ mber |= 1 << i;
+ start += (1 << (col + row + 3) ) * bank;
+ end += (1 << (col + row + 3) ) * bank;
+ }
+ for (; i < 8; i++) {
+ if (i < 4) {
+ msar1 |= 0xff << i * 8;
+ emsar1 |= 0x30 << i * 8;
+ mear1 |= 0xff << i * 8;
+ emear1 |= 0x30 << i * 8;
+ } else {
+ msar2 |= 0xff << (i-4) * 8;
+ emsar2 |= 0x30 << (i-4) * 8;
+ mear2 |= 0xff << (i-4) * 8;
+ emear2 |= 0x30 << (i-4) * 8;
+ }
+ }
- return (size);
+ CONFIG_WRITE_WORD(MCCR1, mccr1);
+ CONFIG_WRITE_WORD(MSAR1, msar1);
+ CONFIG_WRITE_WORD(EMSAR1, emsar1);
+ CONFIG_WRITE_WORD(MEAR1, mear1);
+ CONFIG_WRITE_WORD(EMEAR1, emear1);
+ CONFIG_WRITE_WORD(MSAR2, msar2);
+ CONFIG_WRITE_WORD(EMSAR2, emsar2);
+ CONFIG_WRITE_WORD(MEAR2, mear2);
+ CONFIG_WRITE_WORD(EMEAR2, emear2);
+ CONFIG_WRITE_BYTE(MBER, mber);
+
+ return (1 << (col + row + 3) ) * bank * m;
}
/*