mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-24 20:13:39 +00:00
153 lines
3.8 KiB
C
153 lines
3.8 KiB
C
/*
|
|
* (C) Copyright 2004, Freescale Inc.
|
|
* TsiChung Liew, Tsi-Chung.Liew@freescale.com
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <mpc8220.h>
|
|
#include <asm/processor.h>
|
|
#include <asm/mmu.h>
|
|
|
|
void setupBat (ulong size)
|
|
{
|
|
ulong batu, batl;
|
|
int blocksize = 0;
|
|
|
|
/* Flash 0 */
|
|
#if defined (CFG_AMD_BOOT)
|
|
batu = CFG_FLASH0_BASE | (BL_512K << 2) | BPP_RW | BPP_RX;
|
|
#else
|
|
batu = CFG_FLASH0_BASE | (BL_16M << 2) | BPP_RW | BPP_RX;
|
|
#endif
|
|
batl = CFG_FLASH0_BASE | 0x22;
|
|
write_bat (IBAT0, batu, batl);
|
|
write_bat (DBAT0, batu, batl);
|
|
|
|
/* Flash 1 */
|
|
#if defined (CFG_AMD_BOOT)
|
|
batu = CFG_FLASH1_BASE | (BL_16M << 2) | BPP_RW | BPP_RX;
|
|
#else
|
|
batu = CFG_FLASH1_BASE | (BL_512K << 2) | BPP_RW | BPP_RX;
|
|
#endif
|
|
batl = CFG_FLASH1_BASE | 0x22;
|
|
write_bat (IBAT1, batu, batl);
|
|
write_bat (DBAT1, batu, batl);
|
|
|
|
/* CPLD */
|
|
batu = CFG_CPLD_BASE | (BL_512K << 2) | BPP_RW | BPP_RX;
|
|
batl = CFG_CPLD_BASE | 0x22;
|
|
write_bat (IBAT2, 0, 0);
|
|
write_bat (DBAT2, batu, batl);
|
|
|
|
/* FPGA */
|
|
batu = CFG_FPGA_BASE | (BL_512K << 2) | BPP_RW | BPP_RX;
|
|
batl = CFG_FPGA_BASE | 0x22;
|
|
write_bat (IBAT3, 0, 0);
|
|
write_bat (DBAT3, batu, batl);
|
|
|
|
/* MBAR - Data only */
|
|
batu = CFG_MBAR | BPP_RW | BPP_RX;
|
|
batl = CFG_MBAR | 0x22;
|
|
mtspr (IBAT4L, 0);
|
|
mtspr (IBAT4U, 0);
|
|
mtspr (DBAT4L, batl);
|
|
mtspr (DBAT4U, batu);
|
|
|
|
/* MBAR - SRAM */
|
|
batu = CFG_SRAM_BASE | BPP_RW | BPP_RX;
|
|
batl = CFG_SRAM_BASE | 0x42;
|
|
mtspr (IBAT5L, batl);
|
|
mtspr (IBAT5U, batu);
|
|
mtspr (DBAT5L, batl);
|
|
mtspr (DBAT5U, batu);
|
|
|
|
if (size <= 0x800000) /* 8MB */
|
|
blocksize = BL_8M << 2;
|
|
else if (size <= 0x1000000) /* 16MB */
|
|
blocksize = BL_16M << 2;
|
|
else if (size <= 0x2000000) /* 32MB */
|
|
blocksize = BL_32M << 2;
|
|
else if (size <= 0x4000000) /* 64MB */
|
|
blocksize = BL_64M << 2;
|
|
else if (size <= 0x8000000) /* 128MB */
|
|
blocksize = BL_128M << 2;
|
|
else if (size <= 0x10000000) /* 256MB */
|
|
blocksize = BL_256M << 2;
|
|
|
|
/* Memory */
|
|
batu = CFG_SDRAM_BASE | blocksize | BPP_RW | BPP_RX;
|
|
batl = CFG_SDRAM_BASE | 0x42;
|
|
mtspr (IBAT6L, batl);
|
|
mtspr (IBAT6U, batu);
|
|
mtspr (DBAT6L, batl);
|
|
mtspr (DBAT6U, batu);
|
|
|
|
/* memory size is less than 256MB */
|
|
if (size <= 0x10000000) {
|
|
/* Nothing */
|
|
batu = 0;
|
|
batl = 0;
|
|
} else {
|
|
size -= 0x10000000;
|
|
if (size <= 0x800000) /* 8MB */
|
|
blocksize = BL_8M << 2;
|
|
else if (size <= 0x1000000) /* 16MB */
|
|
blocksize = BL_16M << 2;
|
|
else if (size <= 0x2000000) /* 32MB */
|
|
blocksize = BL_32M << 2;
|
|
else if (size <= 0x4000000) /* 64MB */
|
|
blocksize = BL_64M << 2;
|
|
else if (size <= 0x8000000) /* 128MB */
|
|
blocksize = BL_128M << 2;
|
|
else if (size <= 0x10000000) /* 256MB */
|
|
blocksize = BL_256M << 2;
|
|
|
|
batu = (CFG_SDRAM_BASE +
|
|
0x10000000) | blocksize | BPP_RW | BPP_RX;
|
|
batl = (CFG_SDRAM_BASE + 0x10000000) | 0x42;
|
|
}
|
|
|
|
mtspr (IBAT7L, batl);
|
|
mtspr (IBAT7U, batu);
|
|
mtspr (DBAT7L, batl);
|
|
mtspr (DBAT7U, batu);
|
|
}
|
|
|
|
long int initdram (int board_type)
|
|
{
|
|
ulong size;
|
|
|
|
size = dramSetup ();
|
|
|
|
/* if iCache ad dCache is defined */
|
|
#if (CONFIG_COMMANDS & CFG_CMD_CACHE)
|
|
/* setupBat(size);*/
|
|
#endif
|
|
|
|
return size;
|
|
}
|
|
|
|
int checkboard (void)
|
|
{
|
|
puts ("Board: Alaska MPC8220 Evaluation Board\n");
|
|
|
|
return 0;
|
|
}
|