diff options
Diffstat (limited to 'util/flashrom/sb600spi.c')
| -rw-r--r-- | util/flashrom/sb600spi.c | 175 |
1 files changed, 0 insertions, 175 deletions
diff --git a/util/flashrom/sb600spi.c b/util/flashrom/sb600spi.c deleted file mode 100644 index 9a3e99debe..0000000000 --- a/util/flashrom/sb600spi.c +++ /dev/null @@ -1,175 +0,0 @@ -/* - * This file is part of the flashrom project. - * - * Copyright (C) 2008 Wang Qingpei <Qingpei.Wang@amd.com> - * Copyright (C) 2008 Joe Bao <Zheng.Bao@amd.com> - * Copyright (C) 2008 Advanced Micro Devices, Inc. - * - * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include <stdio.h> -#include <string.h> -#include <stdint.h> -#include <sys/mman.h> -#include <pci/pci.h> -#include "flash.h" -#include "spi.h" - -typedef struct _spi_controller { - unsigned int spi_cntrl0; /* 00h */ - unsigned int restrictedcmd1; /* 04h */ - unsigned int restrictedcmd2; /* 08h */ - unsigned int spi_cntrl1; /* 0ch */ - unsigned int spi_cmdvalue0; /* 10h */ - unsigned int spi_cmdvalue1; /* 14h */ - unsigned int spi_cmdvalue2; /* 18h */ - unsigned int spi_fakeid; /* 1Ch */ -} sb600_spi_controller; - -sb600_spi_controller *spi_bar = NULL; -uint8_t volatile *sb600_spibar; - -int sb600_spi_read(struct flashchip *flash, uint8_t *buf) -{ - int rc = 0, i; - int total_size = flash->total_size * 1024; - int page_size = 8; - - for (i = 0; i < total_size / page_size; i++) - spi_nbyte_read(i * page_size, (void *)(buf + i * page_size), - page_size); - return rc; -} - -uint8_t sb600_read_status_register(void) -{ - const unsigned char cmd[0x02] = { JEDEC_RDSR, 0x00 }; - unsigned char readarr[JEDEC_RDSR_INSIZE]; - - /* Read Status Register */ - spi_command(sizeof(cmd), sizeof(readarr), cmd, readarr); - return readarr[0]; -} - -int sb600_spi_write(struct flashchip *flash, uint8_t *buf) -{ - int rc = 0, i; - int total_size = flash->total_size * 1024; - - /* Erase first */ - printf("Erasing flash before programming... "); - flash->erase(flash); - printf("done.\n"); - - printf("Programming flash"); - for (i = 0; i < total_size; i++, buf++) { - spi_disable_blockprotect(); - spi_write_enable(); - spi_byte_program(i, *buf); - /* wait program complete. */ - if (i % 0x8000 == 0) - printf("."); - while (spi_read_status_register() & JEDEC_RDSR_BIT_WIP) - ; - } - printf(" done.\n"); - return rc; -} - -void reset_internal_fifo_pointer(void) -{ - sb600_spibar[2] |= 0x10; - - while (sb600_spibar[0xD] & 0x7) - printf("reset\n"); -} - -void execute_command(void) -{ - sb600_spibar[2] |= 1; - - while (sb600_spibar[2] & 1) - ; -} - -int sb600_spi_command(unsigned int writecnt, unsigned int readcnt, - const unsigned char *writearr, unsigned char *readarr) -{ - int count; - /* First byte is cmd which can not being sent through FIFO. */ - unsigned char cmd = *writearr++; - - writecnt--; - - spi_bar = (sb600_spi_controller *) sb600_spibar; - - printf_debug("%s, cmd=%x, writecnt=%x, readcnt=%x\n", - __func__, cmd, writecnt, readcnt); - - if (readcnt > 8) { - printf("%s, SB600 SPI controller can not receive %d bytes, " - "which is limited with 8 bytes\n", __func__, readcnt); - return 1; - } - - if (writecnt > 8) { - printf("%s, SB600 SPI controller can not sent %d bytes, " - "which is limited with 8 bytes\n", __func__, writecnt); - return 1; - } - - sb600_spibar[0] = cmd; - sb600_spibar[1] = readcnt << 4 | (writecnt); - - /* Before we use the FIFO, reset it first. */ - reset_internal_fifo_pointer(); - - /* Send the write byte to FIFO. */ - for (count = 0; count < writecnt; count++, writearr++) { - printf_debug(" [%x]", *writearr); - sb600_spibar[0xC] = *writearr; - } - printf_debug("\n"); - - /* - * We should send the data by sequence, which means we need to reset - * the FIFO pointer to the first byte we want to send. - */ - reset_internal_fifo_pointer(); - - execute_command(); - - /* - * After the command executed, we should find out the index of the - * received byte. Here we just reset the FIFO pointer, skip the - * writecnt, is there anyone who have anther method to replace it? - */ - reset_internal_fifo_pointer(); - - for (count = 0; count < writecnt; count++) { - cmd = sb600_spibar[0xC]; /* Skip the byte we send. */ - printf_debug("[ %2x]", cmd); - } - - printf_debug("The FIFO pointer 6 is %d.\n", sb600_spibar[0xd] & 0x07); - for (count = 0; count < readcnt; count++, readarr++) { - *readarr = sb600_spibar[0xC]; - printf_debug("[%02x]", *readarr); - } - printf_debug("\n"); - - return 0; -} |