upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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538 lines
14 KiB
538 lines
14 KiB
/*
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* (C) Copyright 2002
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* MAZeT GmbH <www.mazet.de>
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* Stephan Linz <linz@mazet.de>, <linz@li-pro.net>
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*
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* The most stuff comes from PPCBoot and Linux.
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*
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* IMMS gGmbH <www.imms.de>
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* Thomas Elste <info@elste.org>
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*
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* Modifications for ModNET50 Board
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <asm/arch/netarm_registers.h>
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#define SCR (*(volatile unsigned int *)(NETARM_GEN_MODULE_BASE + NETARM_GEN_SYSTEM_CONTROL))
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#define ALIGN_ABORT_OFF SCR = SCR & ~NETARM_GEN_SYS_CFG_ALIGN_ABORT
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#define ALIGN_ABORT_ON SCR = SCR | NETARM_GEN_SYS_CFG_ALIGN_ABORT
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#define PROG_ADDR (0x555*2)
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#define SETUP_ADDR (0x555*2)
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#define ID_ADDR (0x555*2)
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#define UNLOCK_ADDR1 (0x555*2)
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#define UNLOCK_ADDR2 (0x2AA*2)
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#define UNLOCK_CMD1 (0xAA)
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#define UNLOCK_CMD2 (0x55)
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#define ERASE_SUSPEND_CMD (0xB0)
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#define ERASE_RESUME_CMD (0x30)
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#define RESET_CMD (0xF0)
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#define ID_CMD (0x90)
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#define SECERASE_CMD (0x30)
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#define CHIPERASE_CMD (0x10)
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#define PROG_CMD (0xa0)
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#define SETUP_CMD (0x80)
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#define DQ2 (0x04)
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#define DQ3 (DQ2*2)
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#define DQ5 (DQ3*4)
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#define DQ6 (DQ5*2)
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#define WRITE_UNLOCK(addr) { \
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*(volatile __u16*)(addr + UNLOCK_ADDR1) = (__u16)UNLOCK_CMD1; \
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*(volatile __u16*)(addr + UNLOCK_ADDR2) = (__u16)UNLOCK_CMD2; \
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}
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#define CONFIG_AM29_RESERVED (0)
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#define K (1024)
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#define MB (4)
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#define CELL_SIZE (64*K)
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#define DEVICE_SIZE (MB*K*K)
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#define CELLS_PER_DEVICE (DEVICE_SIZE/CELL_SIZE)
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#define RESERVED_CELLS (CONFIG_AM29_RESERVED*K)/CELL_SIZE
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#define MAX_FLASH_DEVICES (1)
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#define AVAIL_SIZE (DEVICE_SIZE*MAX_FLASH_DEVICES - RESERVED_CELLS*CELL_SIZE)
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flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
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static __u16 toggling_bits;
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/*-----------------------------------------------------------------------
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*/
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ulong flash_get_size (ulong baseaddr, flash_info_t * info)
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{
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short i;
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__u16 flashtest;
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/* Write auto select command sequence and test FLASH answer */
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WRITE_UNLOCK (baseaddr);
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*(volatile __u16 *) (baseaddr + ID_ADDR) = (__u16) ID_CMD;
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flashtest /* manufacturer ID */ = *(volatile __u16 *) (baseaddr);
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*(volatile __u16 *) (baseaddr + ID_ADDR) = (__u16) RESET_CMD;
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switch ((__u32) ((flashtest << 16) + flashtest)) {
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case AMD_MANUFACT:
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info->flash_id = FLASH_MAN_AMD & FLASH_VENDMASK;
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break;
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case FUJ_MANUFACT:
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info->flash_id = FLASH_MAN_FUJ & FLASH_VENDMASK;
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break;
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default:
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info->flash_id = FLASH_UNKNOWN;
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info->sector_count = 0;
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info->size = 0;
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return (0); /* no or unknown flash */
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}
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/* Write auto select command sequence and test FLASH answer */
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WRITE_UNLOCK (baseaddr);
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*(volatile __u16 *) (baseaddr + ID_ADDR) = (__u16) ID_CMD;
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flashtest /* device ID */ = *(volatile __u16 *) (baseaddr + 2);
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*(volatile __u16 *) (baseaddr + ID_ADDR) = (__u16) RESET_CMD;
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/* toggling_bits = (flashtest == TOSHIBA)?(DQ6):(DQ2|DQ6); */
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toggling_bits = (DQ2 | DQ6);
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switch ((__u32) ((flashtest << 16) + flashtest)) {
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case AMD_ID_LV160B:
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info->flash_id +=
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(FLASH_AM160LV | FLASH_AM160B) & FLASH_TYPEMASK;
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info->sector_count = CONFIG_SYS_MAX_FLASH_SECT;
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info->size = CONFIG_SYS_FLASH_SIZE;
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/* 1*16K Boot Block
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2*8K Parameter Block
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1*32K Small Main Block */
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info->start[0] = baseaddr;
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info->start[1] = baseaddr + 0x4000;
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info->start[2] = baseaddr + 0x6000;
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info->start[3] = baseaddr + 0x8000;
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for (i = 1; i < info->sector_count; i++)
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info->start[3 + i] = baseaddr + i * CONFIG_SYS_MAIN_SECT_SIZE;
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break;
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default:
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info->flash_id = FLASH_UNKNOWN;
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return (0); /* no or unknown flash */
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}
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for (i = 0; i < info->sector_count; i++) {
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/* Write auto select command sequence and test FLASH answer */
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WRITE_UNLOCK (info->start[i]);
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*(volatile __u16 *) (info->start[i] + ID_ADDR) = (__u16) ID_CMD;
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flashtest /* protected verify */ = *(volatile __u16 *) (info->start[i] + 4);
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*(volatile __u16 *) (info->start[i] + ID_ADDR) = (__u16) RESET_CMD;
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if (flashtest & 0x0001) {
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info->protect[i] = 1; /* D0 = 1 if protected */
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} else {
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info->protect[i] = 0;
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}
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}
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return (info->size);
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}
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/*-----------------------------------------------------------------------
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*/
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ulong flash_init (void)
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{
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ulong size = 0;
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int i;
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/* Init: no FLASHes known */
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for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
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flash_info[i].flash_id = FLASH_UNKNOWN;
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}
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/* Static FLASH Bank configuration here (only one bank) */
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size = flash_get_size (CONFIG_SYS_FLASH_BASE, &flash_info[0]);
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if (flash_info[0].flash_id == FLASH_UNKNOWN || size == 0) {
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printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
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size, size >> 20);
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}
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/*
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* protect monitor and environment sectors
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*/
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flash_protect (FLAG_PROTECT_SET,
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CONFIG_SYS_FLASH_BASE,
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CONFIG_SYS_FLASH_BASE + monitor_flash_len - 1,
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&flash_info[0]);
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flash_protect (FLAG_PROTECT_SET,
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CONFIG_ENV_ADDR,
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CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1, &flash_info[0]);
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return size;
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}
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/*-----------------------------------------------------------------------
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*/
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void flash_print_info (flash_info_t * info)
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{
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int i;
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if (info->flash_id == FLASH_UNKNOWN) {
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printf ("missing or unknown FLASH type\n");
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return;
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}
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switch (info->flash_id & FLASH_VENDMASK) {
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case FLASH_MAN_AMD:
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printf ("AMD ");
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break;
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case FLASH_MAN_FUJ:
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printf ("Fujitsu ");
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break;
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default:
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printf ("Unknown Vendor ");
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break;
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}
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switch (info->flash_id & FLASH_TYPEMASK) {
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case FLASH_AMDL323B:
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printf ("29DL323B (32 M, bottom sector)\n");
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break;
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case (FLASH_AM160LV | FLASH_AM160B):
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printf ("29LV160BE (1M x 16, bottom sector)\n");
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break;
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default:
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printf ("Unknown Chip Type\n");
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break;
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}
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printf (" Size: %ld MB in %d Sectors\n",
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info->size >> 20, info->sector_count);
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printf (" Sector Start Addresses:");
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for (i = 0; i < info->sector_count; i++) {
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if ((i % 4) == 0)
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printf ("\n ");
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printf (" S%02d @ 0x%08lX%s", i,
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info->start[i], info->protect[i] ? " !" : " ");
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}
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printf ("\n");
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return;
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}
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/*-----------------------------------------------------------------------
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*/
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int flash_check_protection (flash_info_t * info, int s_first, int s_last)
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{
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int sect, prot = 0;
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for (sect = s_first; sect <= s_last; sect++)
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if (info->protect[sect])
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prot++;
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if (prot)
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printf ("- can't erase %d protected sectors\n", prot);
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return prot;
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}
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/*-----------------------------------------------------------------------
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*/
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int flash_check_erase_amd (ulong start)
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{
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__u16 v1, v2;
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v1 = *(volatile __u16 *) (start);
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v2 = *(volatile __u16 *) (start);
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if (((v1 ^ v2) & toggling_bits) == toggling_bits) {
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if (((v1 | v2) & DQ5) == DQ5) {
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printf ("[DQ5] ");
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/* OOPS: exceeded timing limits */
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v1 = *(volatile __u16 *) (start);
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v2 = *(volatile __u16 *) (start);
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if (((v1 ^ v2) & toggling_bits) == toggling_bits) {
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printf ("[%s] ",
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((toggling_bits & (DQ2 | DQ6)) ==
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(DQ2 | DQ6)) ? "DQ2,DQ6" : "DQ6");
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/* OOPS: there is an erasure in progress,
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* try to reset chip */
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*(volatile __u16 *) (start) =
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(__u16) RESET_CMD;
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return 1; /* still busy */
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}
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}
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return 1; /* still busy */
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}
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return 0; /* be free */
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}
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/*-----------------------------------------------------------------------
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*/
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int flash_erase (flash_info_t * info, int s_first, int s_last)
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{
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int flag, sect, setup_offset = 0;
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int rc = ERR_OK;
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ulong start;
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if (info->flash_id == FLASH_UNKNOWN) {
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printf ("- missing\n");
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return ERR_UNKNOWN_FLASH_TYPE;
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}
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if ((s_first < 0) || (s_first > s_last)) {
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printf ("- no sectors to erase\n");
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return ERR_INVAL;
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}
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if (flash_check_protection (info, s_first, s_last))
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return ERR_PROTECTED;
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switch (info->flash_id & FLASH_VENDMASK) {
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case FLASH_MAN_FUJ:
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case FLASH_MAN_AMD:
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switch (info->flash_id & FLASH_TYPEMASK) {
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case (FLASH_AM160LV | FLASH_AM160B):
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setup_offset = UNLOCK_ADDR1; /* just the adress for setup_cmd differs */
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case FLASH_AMDL323B:
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/*
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* Disable interrupts which might cause a timeout
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* here. Remember that our exception vectors are
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* at address 0 in the flash, and we don't want a
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* (ticker) exception to happen while the flash
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* chip is in programming mode.
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*/
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flag = disable_interrupts ();
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/* Start erase on unprotected sectors */
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for (sect = s_first; sect <= s_last && !ctrlc ();
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sect++) {
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printf ("Erasing sector %2d ... ", sect);
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if (info->protect[sect] == 0) {
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/* not protected */
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/* Write sector erase command sequence */
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WRITE_UNLOCK (info->start[0]);
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*(volatile __u16 *) (info->start[0] +
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setup_offset) =
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(__u16) SETUP_CMD;
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WRITE_UNLOCK (info->start[0]);
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*(volatile __u16 *) (info->
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start[sect]) =
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(__u16) SECERASE_CMD;
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/* wait some time */
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start = get_timer(0);
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while (get_timer(start) < 1000) {
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}
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/* arm simple, non interrupt dependent timer */
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start = get_timer(0);
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while (flash_check_erase_amd (info->start[sect])) {
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if (get_timer(start) > CONFIG_SYS_FLASH_ERASE_TOUT) {
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printf ("timeout!\n");
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/* OOPS: reach timeout,
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* try to reset chip
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*/
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*(volatile __u16 *) (info-> start[sect]) = (__u16) RESET_CMD;
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rc = ERR_TIMOUT;
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goto outahere_323B;
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}
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}
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printf ("ok.\n");
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} else {
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printf ("protected!\n");
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}
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}
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if (ctrlc ())
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printf ("User Interrupt!\n");
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outahere_323B:
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/* allow flash to settle - wait 10 ms */
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udelay_masked (10000);
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if (flag)
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enable_interrupts ();
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return rc;
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default:
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printf ("- unknown chip type\n");
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return ERR_UNKNOWN_FLASH_TYPE;
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}
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break;
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default:
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printf ("- unknown vendor ");
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return ERR_UNKNOWN_FLASH_VENDOR;
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}
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}
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/*-----------------------------------------------------------------------
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*/
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int flash_check_write_amd (ulong dest)
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{
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__u16 v1, v2;
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v1 = *(volatile __u16 *) (dest);
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v2 = *(volatile __u16 *) (dest);
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/* DQ6 toggles during write */
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if (((v1 ^ v2) & DQ6) == DQ6) {
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if (((v1 | v2) & DQ5) == DQ5) {
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printf ("[DQ5] @ %08lX\n", dest);
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/* OOPS: exceeded timing limits,
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* try to reset chip */
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*(volatile __u16 *) (dest) = (__u16) RESET_CMD;
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return 0; /* be free */
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}
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return 1; /* still busy */
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}
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return 0; /* be free */
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}
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/*-----------------------------------------------------------------------
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* Copy memory to flash
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*/
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static int write_word (flash_info_t * info, ulong dest, ushort data)
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{
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int rc = ERR_OK;
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int flag;
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ulong start;
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/* Check if Flash is (sufficiently) erased */
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if ((*(__u16 *) (dest) & data) != data)
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return ERR_NOT_ERASED;
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/*
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* Disable interrupts which might cause a timeout
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* here. Remember that our exception vectors are
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* at address 0 in the flash, and we don't want a
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* (ticker) exception to happen while the flash
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* chip is in programming mode.
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*/
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flag = disable_interrupts ();
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/* Write program command sequence */
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WRITE_UNLOCK (info->start[0]);
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/* Flash dependend program seqence */
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switch (info->flash_id & FLASH_VENDMASK) {
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case FLASH_MAN_FUJ:
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case FLASH_MAN_AMD:
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switch (info->flash_id & FLASH_TYPEMASK) {
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case (FLASH_AM160LV | FLASH_AM160B):
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*(volatile __u16 *) (info->start[0] + UNLOCK_ADDR1) =
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(__u16) PROG_CMD;
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*(volatile __u16 *) (dest) = (__u16) data;
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break;
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case FLASH_AMDL323B:
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*(volatile __u16 *) (dest) = (__u16) PROG_CMD;
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*(volatile __u16 *) (dest) = (__u16) data;
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break;
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}
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}
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/* arm simple, non interrupt dependent timer */
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start = get_timer(0);
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while (flash_check_write_amd (dest)) {
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if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
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printf ("timeout! @ %08lX\n", dest);
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/* OOPS: reach timeout,
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* try to reset chip */
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*(volatile __u16 *) (dest) = (__u16) RESET_CMD;
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rc = ERR_TIMOUT;
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goto outahere_323B;
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}
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}
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/* Check if Flash was (accurately) written */
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if (*(__u16 *) (dest) != data)
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rc = ERR_PROG_ERROR;
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outahere_323B:
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if (flag)
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enable_interrupts ();
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return rc;
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}
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/*-----------------------------------------------------------------------
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* Copy memory to flash.
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*/
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int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
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{
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ulong cp, wp;
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ushort data;
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int l;
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int i, rc;
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wp = (addr & ~1); /* get lower word aligned address */
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/*
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* handle unaligned start bytes
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*/
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if ((l = addr - wp) != 0) {
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data = 0;
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for (i = 0, cp = wp; i < l; ++i, ++cp) {
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data = (data >> 8) | (*(uchar *) cp << 8);
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}
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for (; i < 2 && cnt > 0; ++i) {
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data = (data >> 8) | (*src++ << 8);
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--cnt;
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++cp;
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}
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for (; cnt == 0 && i < 2; ++i, ++cp) {
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data = (data >> 8) | (*(uchar *) cp << 8);
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}
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if ((rc = write_word (info, wp, data)) != 0) {
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return (rc);
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}
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wp += 2;
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}
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/*
|
|
* handle word aligned part
|
|
*/
|
|
while (cnt >= 2) {
|
|
data = *((ushort *) src);
|
|
if ((rc = write_word (info, wp, data)) != 0)
|
|
return (rc);
|
|
src += 2;
|
|
wp += 2;
|
|
cnt -= 2;
|
|
}
|
|
|
|
if (cnt == 0)
|
|
return ERR_OK;
|
|
|
|
/*
|
|
* handle unaligned tail bytes
|
|
*/
|
|
data = 0;
|
|
for (i = 0, cp = wp; i < 2 && cnt > 0; ++i, ++cp) {
|
|
data = (data >> 8) | (*src++ << 8);
|
|
--cnt;
|
|
}
|
|
for (; i < 2; ++i, ++cp) {
|
|
data = (data >> 8) | (*(uchar *) cp << 8);
|
|
}
|
|
|
|
return write_word (info, wp, data);
|
|
}
|
|
|