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Diffstat (limited to 'board/alaska/alaska.c')
| -rw-r--r-- | board/alaska/alaska.c | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/board/alaska/alaska.c b/board/alaska/alaska.c new file mode 100644 index 0000000..93874b2 --- /dev/null +++ b/board/alaska/alaska.c @@ -0,0 +1,153 @@ +/* + * (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; +} |