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Diffstat (limited to 'board/amcc/makalu/cmd_pll.c')
| -rw-r--r-- | board/amcc/makalu/cmd_pll.c | 297 |
1 files changed, 297 insertions, 0 deletions
diff --git a/board/amcc/makalu/cmd_pll.c b/board/amcc/makalu/cmd_pll.c new file mode 100644 index 000000000..b2666dd83 --- /dev/null +++ b/board/amcc/makalu/cmd_pll.c @@ -0,0 +1,297 @@ +/* + * (C) Copyright 2000, 2001 + * 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 + * + */ + +/* + * ehnus: change pll frequency. + * Wed Sep 5 11:45:17 CST 2007 + * hsun@udtech.com.cn + */ + + +#include <common.h> +#include <config.h> +#include <command.h> +#include <i2c.h> + +#ifdef CONFIG_CMD_EEPROM + +#define EEPROM_CONF_OFFSET 0 +#define EEPROM_TEST_OFFSET 16 +#define EEPROM_SDSTP_PARAM 16 + +#define PLL_NAME_MAX 12 +#define BUF_STEP 8 + +/* eeprom_wirtes 8Byte per op. */ +#define EEPROM_ALTER_FREQ(freq) \ + do { \ + int __i; \ + for (__i = 0; __i < 2; __i++) \ + eeprom_write (CFG_I2C_EEPROM_ADDR, \ + EEPROM_CONF_OFFSET + __i*BUF_STEP, \ + pll_select[freq], \ + BUF_STEP + __i*BUF_STEP); \ + } while (0) + +#define PDEBUG +#ifdef PDEBUG +#define PLL_DEBUG pll_debug(EEPROM_CONF_OFFSET) +#else +#define PLL_DEBUG +#endif + +typedef enum { + PLL_ebc20, + PLL_333, + PLL_4001, + PLL_4002, + PLL_533, + PLL_600, + PLL_666, /* For now, kilauea can't support */ + RCONF, + WTEST, + PLL_TOTAL +} pll_freq_t; + +static const char +pll_name[][PLL_NAME_MAX] = { + "PLL_ebc20", + "PLL_333", + "PLL_400@1", + "PLL_400@2", + "PLL_533", + "PLL_600", + "PLL_666", + "RCONF", + "WTEST", + "" +}; + +/* + * ehnus: + */ +static uchar +pll_select[][EEPROM_SDSTP_PARAM] = { + /* 0: CPU 333MHz EBC 20MHz, for test only */ + { + 0x8c, 0x12, 0xec, 0x12, 0x88, 0x00, 0x0a, 0x00, + 0x40, 0x08, 0x23, 0x50, 0x00, 0x05, 0x00, 0x00 + }, + + /* 0: 333 */ + { + 0x8c, 0x12, 0xec, 0x12, 0x98, 0x00, 0x0a, 0x00, + 0x40, 0x08, 0x23, 0x50, 0x00, 0x05, 0x00, 0x00 + }, + + /* 1: 400_266 */ + { + 0x8e, 0x0e, 0xe8, 0x13, 0x98, 0x00, 0x0a, 0x00, + 0x40, 0x08, 0x23, 0x50, 0x00, 0x05, 0x00, 0x00 + }, + + /* 2: 400 */ + { + 0x8e, 0x0e, 0xe8, 0x12, 0x98, 0x00, 0x0a, 0x00, + 0x40, 0x08, 0x23, 0x50, 0x00, 0x05, 0x00, 0x00 + }, + + /* 3: 533 */ + { + 0x8e, 0x43, 0x60, 0x13, 0x98, 0x00, 0x0a, 0x00, + 0x40, 0x08, 0x23, 0x50, 0x00, 0x05, 0x00, 0x00 + }, + + /* 4: 600 */ + { + 0x8d, 0x02, 0x34, 0x13, 0x98, 0x00, 0x0a, 0x00, + 0x40, 0x08, 0x23, 0x50, 0x00, 0x05, 0x00, 0x00 + }, + + /* 5: 666 */ + { + 0x8d, 0x03, 0x78, 0x13, 0x98, 0x00, 0x0a, 0x00, + 0x40, 0x08, 0x23, 0x50, 0x00, 0x05, 0x00, 0x00 + }, + + {} +}; + +static uchar +testbuf[EEPROM_SDSTP_PARAM] = { + 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, + 0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff +}; + +static void +pll_debug(int off) +{ + int i; + uchar buffer[EEPROM_SDSTP_PARAM]; + + memset(buffer, 0, sizeof(buffer)); + eeprom_read(CFG_I2C_EEPROM_ADDR, off, + buffer, EEPROM_SDSTP_PARAM); + + printf("Debug: SDSTP[0-3] at offset \"0x%02x\" lists as follows: \n", off); + for (i = 0; i < EEPROM_SDSTP_PARAM; i++) + printf("%02x ", buffer[i]); + printf("\n"); +} + +static void +test_write(void) +{ + printf("Debug: test eeprom_write ... "); + + /* + * Write twice, 8 bytes per write + */ + eeprom_write (CFG_I2C_EEPROM_ADDR, EEPROM_TEST_OFFSET, + testbuf, 8); + eeprom_write (CFG_I2C_EEPROM_ADDR, EEPROM_TEST_OFFSET+8, + testbuf, 16); + printf("done\n"); + + pll_debug(EEPROM_TEST_OFFSET); +} + +int +do_pll_alter (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) +{ + char c = '\0'; + pll_freq_t pll_freq; + if (argc < 2) { + printf("Usage: \n%s\n", cmdtp->usage); + goto ret; + } + + for (pll_freq = PLL_ebc20; pll_freq < PLL_TOTAL; pll_freq++) + if (!strcmp(pll_name[pll_freq], argv[1])) + break; + + switch (pll_freq) { + case PLL_ebc20: + case PLL_333: + case PLL_4001: + case PLL_4002: + case PLL_533: + case PLL_600: + EEPROM_ALTER_FREQ(pll_freq); + break; + + case PLL_666: /* not support */ + printf("Choose this option will result in a boot failure." + "\nContinue? (Y/N): "); + + c = getc(); putc('\n'); + + if ((c == 'y') || (c == 'Y')) { + EEPROM_ALTER_FREQ(pll_freq); + break; + } + goto ret; + + case RCONF: + pll_debug(EEPROM_CONF_OFFSET); + goto ret; + case WTEST: + printf("DEBUG: write test\n"); + test_write(); + goto ret; + + default: + printf("Invalid options" + "\n\nUsage: \n%s\n", cmdtp->usage); + goto ret; + } + + printf("PLL set to %s, " + "reset the board to take effect\n", pll_name[pll_freq]); + + PLL_DEBUG; +ret: + return 0; +} + +U_BOOT_CMD( + pllalter, CFG_MAXARGS, 1, do_pll_alter, + "pllalter- change pll frequence \n", + "pllalter <selection> - change pll frequence \n\n\ + ** New freq take effect after reset. ** \n\ + ----------------------------------------------\n\ + PLL_ebc20: Board: AMCC 405EX(r) Evaluation Board\n\ + \t Same as PLL_333 \n\ + \t except \n\ + \t EBC: 20 MHz \n\ + ----------------------------------------------\n\ + PLL_333: Board: AMCC 405EX(r) Evaluation Board\n\ + \t VCO: 666 MHz \n\ + \t CPU: 333 MHz \n\ + \t PLB: 166 MHz \n\ + \t OPB: 83 MHz \n\ + \t DDR: 83 MHz \n\ + ------------------------------------------------\n\ + PLL_400@1: Board: AMCC 405EX(r) Evaluation Board\n\ + \t VCO: 800 MHz \n\ + \t CPU: 400 MHz \n\ + \t PLB: 133 MHz \n\ + \t OPB: 66 MHz \n\ + \t DDR: 133 MHz \n\ + ------------------------------------------------\n\ + PLL_400@2: Board: AMCC 405EX(r) Evaluation Board\n\ + \t VCO: 800 MHz \n\ + \t CPU: 400 MHz \n\ + \t PLB: 200 MHz \n\ + \t OPB: 100 MHz \n\ + \t DDR: 200 MHz \n\ + ----------------------------------------------\n\ + PLL_533: Board: AMCC 405EX(r) Evaluation Board\n\ + \t VCO: 1066 MHz \n\ + \t CPU: 533 MHz \n\ + \t PLB: 177 MHz \n\ + \t OPB: 88 MHz \n\ + \t DDR: 177 MHz \n\ + ----------------------------------------------\n\ + PLL_600: Board: AMCC 405EX(r) Evaluation Board\n\ + \t VCO: 1200 MHz \n\ + \t CPU: 600 MHz \n\ + \t PLB: 200 MHz \n\ + \t OPB: 100 MHz \n\ + \t DDR: 200 MHz \n\ + ----------------------------------------------\n\ + PLL_666: Board: AMCC 405EX(r) Evaluation Board\n\ + \t VCO: 1333 MHz \n\ + \t CPU: 666 MHz \n\ + \t PLB: 166 MHz \n\ + \t OPB: 83 MHz \n\ + \t DDR: 166 MHz \n\ + -----------------------------------------------\n\ + RCONF: Read current eeprom configuration. \n\ + -----------------------------------------------\n\ + WTEST: Test EEPROM write with predefined values\n\ + -----------------------------------------------\n" + ); + +#endif /* (CONFIG_COMMANDS & CFG_CMD_EEPROM) */ |