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Diffstat (limited to 'board/amcc/walnut/walnut.c')
| -rw-r--r-- | board/amcc/walnut/walnut.c | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/board/amcc/walnut/walnut.c b/board/amcc/walnut/walnut.c new file mode 100644 index 0000000..9fca0a6 --- /dev/null +++ b/board/amcc/walnut/walnut.c @@ -0,0 +1,111 @@ +/* + * (C) Copyright 2000-2005 + * Wolfgang Denk, DENX Software Engineering, wd@denx.de. + * + * 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 <asm/processor.h> +#include <spd_sdram.h> + +int board_early_init_f(void) +{ + /*-------------------------------------------------------------------------+ + | Interrupt controller setup for the Walnut/Sycamore board. + | Note: IRQ 0-15 405GP internally generated; active high; level sensitive + | IRQ 16 405GP internally generated; active low; level sensitive + | IRQ 17-24 RESERVED + | IRQ 25 (EXT IRQ 0) FPGA; active high; level sensitive + | IRQ 26 (EXT IRQ 1) SMI; active high; level sensitive + | IRQ 27 (EXT IRQ 2) Not Used + | IRQ 28 (EXT IRQ 3) PCI SLOT 3; active low; level sensitive + | IRQ 29 (EXT IRQ 4) PCI SLOT 2; active low; level sensitive + | IRQ 30 (EXT IRQ 5) PCI SLOT 1; active low; level sensitive + | IRQ 31 (EXT IRQ 6) PCI SLOT 0; active low; level sensitive + | Note for Walnut board: + | An interrupt taken for the FPGA (IRQ 25) indicates that either + | the Mouse, Keyboard, IRDA, or External Expansion caused the + | interrupt. The FPGA must be read to determine which device + | caused the interrupt. The default setting of the FPGA clears + | + +-------------------------------------------------------------------------*/ + + mtdcr(uicsr, 0xFFFFFFFF); /* clear all ints */ + mtdcr(uicer, 0x00000000); /* disable all ints */ + mtdcr(uiccr, 0x00000020); /* set all but FPGA SMI to be non-critical */ + mtdcr(uicpr, 0xFFFFFFE0); /* set int polarities */ + mtdcr(uictr, 0x10000000); /* set int trigger levels */ + mtdcr(uicvcr, 0x00000001); /* set vect base=0,INT0 highest priority */ + mtdcr(uicsr, 0xFFFFFFFF); /* clear all ints */ + + /* set UART1 control to select CTS/RTS */ +#define FPGA_BRDC 0xF0300004 + *(volatile char *)(FPGA_BRDC) |= 0x1; + + return 0; +} + +/* + * Check Board Identity: + */ +int checkboard(void) +{ + unsigned char *s = getenv("serial#"); + uint pvr = get_pvr(); + + if (pvr == PVR_405GPR_RB) { + puts("Board: Sycamore - AMCC PPC405GPr Evaluation Board"); + } else { + puts("Board: Walnut - AMCC PPC405GP Evaluation Board"); + } + + if (s != NULL) { + puts(", serial# "); + puts(s); + } + putc('\n'); + + return (0); +} + +/* + * sdram_init - Dummy implementation for start.S, spd_sdram used on this board! + */ +void sdram_init(void) +{ + return; +} + +/* + * initdram(int board_type) reads EEPROM via I2c. EEPROM contains all of + * the necessary info for SDRAM controller configuration + */ +long int initdram(int board_type) +{ + return spd_sdram(0); +} + +int testdram(void) +{ + /* TODO: XXX XXX XXX */ + printf("test: xxx MB - ok\n"); + + return (0); +} |