diff options
Diffstat (limited to 'board_enable.c')
| -rw-r--r-- | board_enable.c | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/board_enable.c b/board_enable.c index 89519b2..43ca02c 100644 --- a/board_enable.c +++ b/board_enable.c @@ -4,6 +4,7 @@ * Copyright (C) 2005-2007 coresystems GmbH <stepan@coresystems.de> * Copyright (C) 2006 Uwe Hermann <uwe@hermann-uwe.de> * Copyright (C) 2007 Luc Verhaegen <libv@skynet.be> + * Copyright (C) 2007 Carl-Daniel Hailfinger * * 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 @@ -29,6 +30,104 @@ #include <string.h> #include "flash.h" +/* Generic Super I/O helper functions */ +uint8_t regval(uint16_t port, uint8_t reg) +{ + outb(reg, port); + return inb(port + 1); +} + +void regwrite(uint16_t port, uint8_t reg, uint8_t val) +{ + outb(reg, port); + outb(val, port + 1); +} + +/* Helper functions for most recent ITE IT87xx Super I/O chips */ +#define CHIP_ID_BYTE1_REG 0x20 +#define CHIP_ID_BYTE2_REG 0x21 +static void enter_conf_mode_ite(uint16_t port) +{ + outb(0x87, port); + outb(0x01, port); + outb(0x55, port); + if (port == 0x2e) + outb(0x55, port); + else + outb(0xaa, port); +} + +static void exit_conf_mode_ite(uint16_t port) +{ + regwrite(port, 0x02, 0x02); +} + +static uint16_t find_ite_serial_flash_port(uint16_t port) +{ + uint8_t tmp = 0; + uint16_t id, flashport = 0; + + enter_conf_mode_ite(port); + + id = regval(port, CHIP_ID_BYTE1_REG) << 8; + id |= regval(port, CHIP_ID_BYTE2_REG); + + /* TODO: Handle more IT87xx if they support flash translation */ + if (id == 0x8716) { + /* NOLDN, reg 0x24, mask out lowest bit (suspend) */ + tmp = regval(port, 0x24) & 0xFE; + printf("Serial flash segment 0x%08x-0x%08x %sabled\n", + 0xFFFE0000, 0xFFFFFFFF, (tmp & 1 << 1) ? "en" : "dis"); + printf("Serial flash segment 0x%08x-0x%08x %sabled\n", + 0x000E0000, 0x000FFFFF, (tmp & 1 << 1) ? "en" : "dis"); + printf("Serial flash segment 0x%08x-0x%08x %sabled\n", + 0xFFEE0000, 0xFFEFFFFF, (tmp & 1 << 2) ? "en" : "dis"); + printf("Serial flash segment 0x%08x-0x%08x %sabled\n", + 0xFFF80000, 0xFFFEFFFF, (tmp & 1 << 3) ? "en" : "dis"); + printf("LPC write to serial flash %sabled\n", + (tmp & 1 << 4) ? "en" : "dis"); + printf("serial flash pin %i\n", (tmp & 1 << 5) ? 87 : 29); + /* LDN 0x7, reg 0x64/0x65 */ + regwrite(port, 0x07, 0x7); + flashport = regval(port, 0x64) << 8; + flashport |= regval(port, 0x65); + } + exit_conf_mode_ite(port); + return flashport; +} + +static void it8716_serial_rdid(uint16_t port) +{ + uint8_t busy, data0, data1, data2; + do { + busy = inb(port) & 0x80; + } while (busy); + /* RDID */ + outb(0x9f, port + 1); + /* Start IO, 33MHz, 3 input bytes, 0 output bytes*/ + outb((0x5<<4)|(0x3<<2)|(0x0), port); + do { + busy = inb(port) & 0x80; + } while (busy); + data0 = inb(port + 5); + data1 = inb(port + 6); + data2 = inb(port + 7); + printf("RDID returned %02x %02x %02x\n", data0, data1, data2); + return; +} + +static int it87xx_probe_serial_flash(const char *name) +{ + uint16_t flashport; + flashport = find_ite_serial_flash_port(0x2e); + if (flashport) + it8716_serial_rdid(flashport); + flashport = find_ite_serial_flash_port(0x4e); + if (flashport) + it8716_serial_rdid(flashport); + return 0; +} + /* * Helper functions for many Winbond Super I/Os of the W836xx range. */ @@ -314,6 +413,8 @@ struct board_pciid_enable { }; struct board_pciid_enable board_pciid_enables[] = { + {0x10de, 0x0360, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, + "gigabyte", "m57sli", "GIGABYTE GA-M57SLI", it87xx_probe_serial_flash}, {0x1022, 0x7468, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, "iwill", "dk8_htx", "IWILL DK8-HTX", w83627hf_gpio24_raise}, {0x1022, 0x746B, 0x1022, 0x36C0, 0x0000, 0x0000, 0x0000, 0x0000, |
