diff options
Diffstat (limited to 'board/amcc/sequoia/cmd_sequoia.c')
| -rw-r--r-- | board/amcc/sequoia/cmd_sequoia.c | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/board/amcc/sequoia/cmd_sequoia.c b/board/amcc/sequoia/cmd_sequoia.c new file mode 100644 index 0000000..f3803c0 --- /dev/null +++ b/board/amcc/sequoia/cmd_sequoia.c @@ -0,0 +1,220 @@ +/* + * (C) Copyright 2007 + * Stefan Roese, DENX Software Engineering, sr@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 <command.h> +#include <i2c.h> + +/* + * There are 2 versions of production Sequoia & Rainier platforms. + * The primary difference is the reference clock. Those with + * 33333333 reference clocks will also have 667MHz rated + * processors. Not enough differences to have unique clock + * settings. + * + * NOR and NAND boot options change bytes 6, 7, 8, 9, 11. The + * values are independent of the rest of the clock settings. + * + * All Sequoias & Rainiers select from two possible EEPROMs in Boot + * Config F. One for 33MHz PCI, one for 66MHz PCI. The following + * values are for the 33MHz PCI configuration. Byte 5 (0 base) is + * the only value affected for a 66MHz PCI and simply needs a +0x10. + */ + +#define NAND_COMPATIBLE 0x01 +#define NOR_COMPATIBLE 0x02 + +/* check with Stefan on CFG_I2C_EEPROM_ADDR */ +#define I2C_EEPROM_ADDR 0x52 + +static char *config_labels[] = { + "CPU: 333 PLB: 133 OPB: 66 EBC: 66", + "CPU: 333 PLB: 166 OPB: 83 EBC: 55", + "CPU: 400 PLB: 133 OPB: 66 EBC: 66", + "CPU: 400 PLB: 160 OPB: 80 EBC: 53", + "CPU: 416 PLB: 166 OPB: 83 EBC: 55", + "CPU: 500 PLB: 166 OPB: 83 EBC: 55", + "CPU: 533 PLB: 133 OPB: 66 EBC: 66", + "CPU: 667 PLB: 166 OPB: 83 EBC: 55", + NULL +}; + +static u8 boot_configs[][17] = { + { + (NOR_COMPATIBLE), + 0x84, 0x70, 0xa2, 0xa6, 0x05, 0x57, 0xa0, 0x10, 0x40, + 0x08, 0x23, 0x50, 0x0d, 0x05, 0x00, 0x00 + }, + { + (NAND_COMPATIBLE | NOR_COMPATIBLE), + 0xc7, 0x78, 0xf3, 0x4e, 0x05, 0xd7, 0xa0, 0x30, 0x40, + 0x08, 0x23, 0x50, 0x0d, 0x05, 0x00, 0x00 + }, + { + (NOR_COMPATIBLE), + 0x86, 0x78, 0xc2, 0xc6, 0x05, 0x57, 0xa0, 0x30, 0x40, + 0x08, 0x23, 0x50, 0x0d, 0x05, 0x00, 0x00 + }, + { + (NOR_COMPATIBLE), + 0x86, 0x78, 0xc2, 0xa6, 0x05, 0xd7, 0xa0, 0x10, 0x40, + 0x08, 0x23, 0x50, 0x0d, 0x05, 0x00, 0x00 + }, + { + (NAND_COMPATIBLE | NOR_COMPATIBLE), + 0xc6, 0x78, 0x52, 0xa6, 0x05, 0xd7, 0xa0, 0x10, 0x40, + 0x08, 0x23, 0x50, 0x0d, 0x05, 0x00, 0x00 + }, + { + (NAND_COMPATIBLE | NOR_COMPATIBLE), + 0xc7, 0x78, 0x52, 0xc6, 0x05, 0xd7, 0xa0, 0x30, 0x40, + 0x08, 0x23, 0x50, 0x0d, 0x05, 0x00, 0x00 + }, + { + (NOR_COMPATIBLE), + 0x87, 0x78, 0x82, 0x52, 0x09, 0x57, 0xa0, 0x30, 0x40, + 0x08, 0x23, 0x50, 0x0d, 0x05, 0x00, 0x00 + }, + { + (NAND_COMPATIBLE | NOR_COMPATIBLE), + 0x87, 0x78, 0xa2, 0x52, 0x09, 0xd7, 0xa0, 0x30, 0x40, + 0x08, 0x23, 0x50, 0x0d, 0x05, 0x00, 0x00 + }, + { + 0, + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 + } +}; + +/* + * Bytes 6,8,9,11 change for NAND boot + */ +static u8 nand_boot[] = { + 0xd0, 0xa0, 0x68, 0x58 +}; + +static int do_bootstrap(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) +{ + u8 *buf, bNAND; + int x, y, nbytes, selcfg; + extern char console_buffer[]; + + if (argc < 2) { + printf("Usage:\n%s\n", cmdtp->usage); + return 1; + } + + if ((strcmp(argv[1], "nor") != 0) && + (strcmp(argv[1], "nand") != 0)) { + printf("Unsupported boot-device - only nor|nand support\n"); + return 1; + } + + /* set the nand flag based on provided input */ + if ((strcmp(argv[1], "nand") == 0)) + bNAND = 1; + else + bNAND = 0; + + printf("Available configurations: \n\n"); + + if (bNAND) { + for(x = 0, y = 0; boot_configs[x][0] != 0; x++) { + /* filter on nand compatible */ + if (boot_configs[x][0] & NAND_COMPATIBLE) { + printf(" %d - %s\n", (y+1), config_labels[x]); + y++; + } + } + } else { + for(x = 0, y = 0; boot_configs[x][0] != 0; x++) { + /* filter on nor compatible */ + if (boot_configs[x][0] & NOR_COMPATIBLE) { + printf(" %d - %s\n", (y+1), config_labels[x]); + y++; + } + } + } + + do { + nbytes = readline(" Selection [1-x / quit]: "); + + if (nbytes) { + if (strcmp(console_buffer, "quit") == 0) + return 0; + selcfg = simple_strtol(console_buffer, NULL, 10); + if ((selcfg < 1) || (selcfg > y)) + nbytes = 0; + } + } while (nbytes == 0); + + + y = (selcfg - 1); + + for (x = 0; boot_configs[x][0] != 0; x++) { + if (bNAND) { + if (boot_configs[x][0] & NAND_COMPATIBLE) { + if (y > 0) + y--; + else if (y < 1) + break; + } + } else { + if (boot_configs[x][0] & NOR_COMPATIBLE) { + if (y > 0) + y--; + else if (y < 1) + break; + } + } + } + + buf = &boot_configs[x][1]; + + if (bNAND) { + buf[6] = nand_boot[0]; + buf[8] = nand_boot[1]; + buf[9] = nand_boot[2]; + buf[11] = nand_boot[3]; + } + + /* check CPLD register +5 for PCI 66MHz flag */ + if (in8(CFG_BCSR_BASE + 5) & 0x01) + buf[5] += 0x10; + + if (i2c_write(I2C_EEPROM_ADDR, 0, 1, buf, 16) != 0) + printf("Error writing to EEPROM at address 0x%x\n", I2C_EEPROM_ADDR); + udelay(CFG_EEPROM_PAGE_WRITE_DELAY_MS * 1000); + + printf("Done\n"); + printf("Please power-cycle the board for the changes to take effect\n"); + + return 0; +} + +U_BOOT_CMD( + bootstrap, 2, 0, do_bootstrap, + "bootstrap - program the I2C bootstrap EEPROM\n", + "<nand|nor> - strap to boot from NAND or NOR flash\n" + ); |