- Map in a additional chip selects CS4 and CS5.
- Modify the port configration, configure six UARTs and no PCI,
ATA and USB.
- Add custom flash driver to handle specific byte swapping
master
Marian Balakowicz
19 years ago
parent
aeec782b02
commit
7299712c86
@ -0,0 +1,786 @@ |
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/*
|
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* (C) Copyright 2006 |
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
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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 <mpc5xxx.h> |
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#include <asm/processor.h> |
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#ifdef CONFIG_CAM5200 |
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#if 0 |
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#define DEBUGF(x...) printf(x) |
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#else |
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#define DEBUGF(x...) |
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#endif |
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#define swap16(x) __swab16(x) |
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flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */ |
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/*
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* CAM5200 is a TQM5200B based board. Additionally it also features |
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* a NIOS cpu. The NIOS CPU peripherals are accessible through MPC5xxx |
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* Local Bus on CS5. This includes 32 bit wide RAM and SRAM as well as |
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* 16 bit wide flash device. Big Endian order on a 32 bit CS5 makes |
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* access to flash chip slightly more complicated as additional byte |
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* swapping is necessary within each 16 bit wide flash 'word'. |
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* |
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* This driver's task is to handle both flash devices: 32 bit TQM5200B |
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* flash chip and 16 bit NIOS cpu flash chip. In the below
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* flash_addr_table table we use least significant address bit to mark |
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* 16 bit flash bank and two sets of routines *_32 and *_16 to handle |
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* specifics of both flashes. |
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*/ |
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static unsigned long flash_addr_table[][CFG_MAX_FLASH_BANKS] = { |
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{CFG_BOOTCS_START, CFG_CS5_START | 1} |
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}; |
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|
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/*-----------------------------------------------------------------------
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* Functions |
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*/ |
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static int write_word(flash_info_t * info, ulong dest, ulong data); |
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#ifdef CFG_FLASH_2ND_16BIT_DEV |
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static int write_word_32(flash_info_t * info, ulong dest, ulong data); |
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static int write_word_16(flash_info_t * info, ulong dest, ulong data); |
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static int flash_erase_32(flash_info_t * info, int s_first, int s_last); |
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static int flash_erase_16(flash_info_t * info, int s_first, int s_last); |
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static ulong flash_get_size_32(vu_long * addr, flash_info_t * info); |
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static ulong flash_get_size_16(vu_long * addr, flash_info_t * info); |
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#endif |
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void flash_print_info(flash_info_t * info) |
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{ |
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int i, k; |
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int size, erased; |
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volatile unsigned long *flash; |
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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_S29GL128N: |
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printf ("S29GL128N (256 Mbit, uniform sector size)\n"); |
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break; |
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case FLASH_AM320B: |
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printf ("29LV320B (32 Mbit, bottom boot sect)\n"); |
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break; |
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case FLASH_AM320T: |
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printf ("29LV320T (32 Mbit, top boot sect)\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 KB in %d Sectors\n", |
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info->size >> 10, 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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/*
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* Check if whole sector is erased |
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*/ |
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if (i != (info->sector_count - 1)) |
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size = info->start[i + 1] - info->start[i]; |
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else |
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size = info->start[0] + info->size - info->start[i]; |
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erased = 1; |
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flash = (volatile unsigned long *)info->start[i]; |
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size = size >> 2; /* divide by 4 for longword access */ |
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for (k = 0; k < size; k++) { |
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if (*flash++ != 0xffffffff) { |
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erased = 0; |
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break; |
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} |
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} |
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if ((i % 5) == 0) |
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printf("\n "); |
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printf(" %08lX%s%s", info->start[i], |
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erased ? " E" : " ", |
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info->protect[i] ? "RO " : " "); |
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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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* The following code cannot be run from FLASH! |
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*/ |
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#ifdef CFG_FLASH_2ND_16BIT_DEV |
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static ulong flash_get_size(vu_long * addr, flash_info_t * info) |
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{ |
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DEBUGF("get_size: FLASH ADDR %08lx\n", addr); |
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/* bit 0 used for big flash marking */ |
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if ((ulong)addr & 0x1) |
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return flash_get_size_16((vu_long *)((ulong)addr & 0xfffffffe), info); |
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else |
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return flash_get_size_32(addr, info); |
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} |
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static ulong flash_get_size_32(vu_long * addr, flash_info_t * info) |
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#else |
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static ulong flash_get_size(vu_long * addr, flash_info_t * info) |
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#endif |
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{ |
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short i; |
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CFG_FLASH_WORD_SIZE value; |
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ulong base = (ulong) addr; |
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volatile CFG_FLASH_WORD_SIZE *addr2 = (CFG_FLASH_WORD_SIZE *) addr; |
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DEBUGF("get_size32: FLASH ADDR: %08x\n", (unsigned)addr); |
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/* Write auto select command: read Manufacturer ID */ |
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addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA; |
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addr2[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055; |
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addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00900090; |
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udelay(1000); |
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value = addr2[0]; |
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DEBUGF("FLASH MANUFACT: %x\n", value); |
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switch (value) { |
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case (CFG_FLASH_WORD_SIZE) AMD_MANUFACT: |
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info->flash_id = FLASH_MAN_AMD; |
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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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value = addr2[1]; /* device ID */ |
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DEBUGF("\nFLASH DEVICEID: %x\n", value); |
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switch (value) { |
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case AMD_ID_MIRROR: |
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DEBUGF("Mirror Bit flash: addr[14] = %08lX addr[15] = %08lX\n", |
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addr[14], addr[15]); |
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switch(addr[14]) { |
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case AMD_ID_GL128N_2: |
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if (addr[15] != AMD_ID_GL128N_3) { |
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DEBUGF("Chip: S29GL128N -> unknown\n"); |
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info->flash_id = FLASH_UNKNOWN; |
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} else { |
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DEBUGF("Chip: S29GL128N\n"); |
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info->flash_id += FLASH_S29GL128N; |
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info->sector_count = 128; |
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info->size = 0x02000000; |
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} |
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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); |
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} |
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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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/* set up sector start address table */ |
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for (i = 0; i < info->sector_count; i++) |
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info->start[i] = base + (i * 0x00040000); |
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/* check for protected sectors */ |
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for (i = 0; i < info->sector_count; i++) { |
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/* read sector protection at sector address, (A7 .. A0) = 0x02 */ |
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/* D0 = 1 if protected */ |
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addr2 = (volatile CFG_FLASH_WORD_SIZE *)(info->start[i]); |
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info->protect[i] = addr2[2] & 1; |
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} |
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/* issue bank reset to return to read mode */ |
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addr2[0] = (CFG_FLASH_WORD_SIZE) 0x00F000F0; |
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return (info->size); |
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} |
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static int wait_for_DQ7_32(flash_info_t * info, int sect) |
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{ |
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ulong start, now, last; |
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volatile CFG_FLASH_WORD_SIZE *addr = |
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(CFG_FLASH_WORD_SIZE *) (info->start[sect]); |
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start = get_timer(0); |
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last = start; |
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while ((addr[0] & (CFG_FLASH_WORD_SIZE) 0x00800080) != |
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(CFG_FLASH_WORD_SIZE) 0x00800080) { |
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if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) { |
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printf("Timeout\n"); |
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return -1; |
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} |
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/* show that we're waiting */ |
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if ((now - last) > 1000) { /* every second */ |
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putc('.'); |
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last = now; |
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} |
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} |
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return 0; |
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} |
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#ifdef CFG_FLASH_2ND_16BIT_DEV |
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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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if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) { |
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return flash_erase_16(info, s_first, s_last); |
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} else { |
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return flash_erase_32(info, s_first, s_last); |
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} |
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} |
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static int flash_erase_32(flash_info_t * info, int s_first, int s_last) |
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#else |
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int flash_erase(flash_info_t * info, int s_first, int s_last) |
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#endif |
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{ |
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volatile CFG_FLASH_WORD_SIZE *addr = (CFG_FLASH_WORD_SIZE *) (info->start[0]); |
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volatile CFG_FLASH_WORD_SIZE *addr2; |
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int flag, prot, sect, l_sect; |
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if ((s_first < 0) || (s_first > s_last)) { |
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if (info->flash_id == FLASH_UNKNOWN) |
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printf("- missing\n"); |
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else |
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printf("- no sectors to erase\n"); |
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return 1; |
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} |
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if (info->flash_id == FLASH_UNKNOWN) { |
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printf("Can't erase unknown flash type - aborted\n"); |
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return 1; |
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} |
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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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} |
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if (prot) |
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printf("- Warning: %d protected sectors will not be erased!", prot); |
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printf("\n"); |
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l_sect = -1; |
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/* Disable interrupts which might cause a timeout here */ |
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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; sect++) { |
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if (info->protect[sect] == 0) { /* not protected */ |
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addr2 = (CFG_FLASH_WORD_SIZE *) (info->start[sect]); |
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addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA; |
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addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055; |
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addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00800080; |
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addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA; |
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addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055; |
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addr2[0] = (CFG_FLASH_WORD_SIZE) 0x00300030; /* sector erase */ |
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l_sect = sect; |
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/*
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* Wait for each sector to complete, it's more |
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* reliable. According to AMD Spec, you must |
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* issue all erase commands within a specified |
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* timeout. This has been seen to fail, especially |
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* if printf()s are included (for debug)!! |
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*/ |
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wait_for_DQ7_32(info, sect); |
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} |
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} |
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/* re-enable interrupts if necessary */ |
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if (flag) |
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enable_interrupts(); |
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/* wait at least 80us - let's wait 1 ms */ |
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udelay(1000); |
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/* reset to read mode */ |
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addr = (CFG_FLASH_WORD_SIZE *) info->start[0]; |
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addr[0] = (CFG_FLASH_WORD_SIZE) 0x00F000F0; /* reset bank */ |
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printf(" done\n"); |
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return 0; |
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} |
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/*-----------------------------------------------------------------------
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* Copy memory to flash, returns: |
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* 0 - OK |
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* 1 - write timeout |
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* 2 - Flash not erased |
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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, data; |
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int i, l, rc; |
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wp = (addr & ~3); /* 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); |
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for (; i < 4 && cnt > 0; ++i) { |
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data = (data << 8) | *src++; |
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--cnt; |
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++cp; |
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} |
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for (; cnt == 0 && i < 4; ++i, ++cp) |
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data = (data << 8) | (*(uchar *) cp); |
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if ((rc = write_word(info, wp, data)) != 0) |
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return (rc); |
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wp += 4; |
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} |
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/*
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* handle word aligned part |
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*/ |
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while (cnt >= 4) { |
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data = 0; |
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for (i = 0; i < 4; ++i) |
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data = (data << 8) | *src++; |
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if ((rc = write_word(info, wp, data)) != 0) |
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return (rc); |
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wp += 4; |
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cnt -= 4; |
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} |
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if (cnt == 0) |
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return (0); |
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/*
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* handle unaligned tail bytes |
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*/ |
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data = 0; |
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for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) { |
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data = (data << 8) | *src++; |
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--cnt; |
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} |
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for (; i < 4; ++i, ++cp) |
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data = (data << 8) | (*(uchar *) cp); |
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return (write_word(info, wp, data)); |
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} |
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|
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/*-----------------------------------------------------------------------
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* Copy memory to flash, returns: |
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* 0 - OK |
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* 1 - write timeout |
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* 2 - Flash not erased |
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*/ |
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#ifdef CFG_FLASH_2ND_16BIT_DEV |
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static int write_word(flash_info_t * info, ulong dest, ulong data) |
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{ |
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if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) { |
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return write_word_16(info, dest, data); |
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} else { |
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return write_word_32(info, dest, data); |
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} |
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} |
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|
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static int write_word_32(flash_info_t * info, ulong dest, ulong data) |
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#else |
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static int write_word(flash_info_t * info, ulong dest, ulong data) |
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#endif |
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{ |
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volatile CFG_FLASH_WORD_SIZE *addr2 = (CFG_FLASH_WORD_SIZE *) (info->start[0]); |
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volatile CFG_FLASH_WORD_SIZE *dest2 = (CFG_FLASH_WORD_SIZE *) dest; |
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volatile CFG_FLASH_WORD_SIZE *data2 = (CFG_FLASH_WORD_SIZE *) & data; |
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ulong start; |
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int i, flag; |
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|
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/* Check if Flash is (sufficiently) erased */ |
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if ((*((vu_long *)dest) & data) != data) |
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return (2); |
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for (i = 0; i < 4 / sizeof(CFG_FLASH_WORD_SIZE); i++) { |
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/* Disable interrupts which might cause a timeout here */ |
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flag = disable_interrupts(); |
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addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00AA00AA; |
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addr2[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x00550055; |
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addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x00A000A0; |
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|
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dest2[i] = data2[i]; |
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|
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/* re-enable interrupts if necessary */ |
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if (flag) |
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enable_interrupts(); |
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|
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/* data polling for D7 */ |
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start = get_timer(0); |
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while ((dest2[i] & (CFG_FLASH_WORD_SIZE) 0x00800080) != |
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(data2[i] & (CFG_FLASH_WORD_SIZE) 0x00800080)) { |
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|
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if (get_timer(start) > CFG_FLASH_WRITE_TOUT) |
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return (1); |
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} |
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} |
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return (0); |
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} |
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|
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#ifdef CFG_FLASH_2ND_16BIT_DEV |
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|
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#undef CFG_FLASH_WORD_SIZE |
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#define CFG_FLASH_WORD_SIZE unsigned short |
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|
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/*
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* The following code cannot be run from FLASH! |
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*/ |
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static ulong flash_get_size_16(vu_long * addr, flash_info_t * info) |
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{ |
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short i; |
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CFG_FLASH_WORD_SIZE value; |
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ulong base = (ulong) addr; |
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volatile CFG_FLASH_WORD_SIZE *addr2 = (CFG_FLASH_WORD_SIZE *) addr; |
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|
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DEBUGF("get_size16: FLASH ADDR: %08x\n", (unsigned)addr); |
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|
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/* issue bank reset to return to read mode */ |
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addr2[0] = (CFG_FLASH_WORD_SIZE) 0xF000F000; |
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|
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/* Write auto select command: read Manufacturer ID */ |
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addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0xAA00AA00; |
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addr2[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x55005500; |
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addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x90009000; |
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udelay(1000); |
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|
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value = swap16(addr2[0]); |
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DEBUGF("FLASH MANUFACT: %x\n", value); |
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|
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switch (value) { |
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case (CFG_FLASH_WORD_SIZE) AMD_MANUFACT: |
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info->flash_id = FLASH_MAN_AMD; |
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break; |
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case (CFG_FLASH_WORD_SIZE) FUJ_MANUFACT: |
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info->flash_id = FLASH_MAN_FUJ; |
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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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|
||||
value = swap16(addr2[1]); /* device ID */ |
||||
DEBUGF("\nFLASH DEVICEID: %x\n", value); |
||||
|
||||
switch (value) { |
||||
case (CFG_FLASH_WORD_SIZE)AMD_ID_LV320B: |
||||
info->flash_id += FLASH_AM320B; |
||||
info->sector_count = 71; |
||||
info->size = 0x00400000; |
||||
break; /* => 4 MB */ |
||||
case (CFG_FLASH_WORD_SIZE)AMD_ID_LV320T: |
||||
info->flash_id += FLASH_AM320T; |
||||
info->sector_count = 71; |
||||
info->size = 0x00400000; |
||||
break; /* => 4 MB */ |
||||
default: |
||||
info->flash_id = FLASH_UNKNOWN; |
||||
return (0); /* => no or unknown flash */ |
||||
} |
||||
|
||||
if (info->flash_id & FLASH_BTYPE) { |
||||
/* set sector offsets for bottom boot block type */ |
||||
info->start[0] = base + 0x00000000; |
||||
info->start[1] = base + 0x00002000; |
||||
info->start[2] = base + 0x00004000; |
||||
info->start[3] = base + 0x00006000; |
||||
info->start[4] = base + 0x00008000; |
||||
info->start[5] = base + 0x0000a000; |
||||
info->start[6] = base + 0x0000c000; |
||||
info->start[7] = base + 0x0000e000; |
||||
|
||||
for (i = 8; i < info->sector_count; i++) |
||||
info->start[i] = base + (i * 0x00010000) - 0x00070000; |
||||
} else { |
||||
/* set sector offsets for top boot block type */ |
||||
i = info->sector_count - 1; |
||||
info->start[i--] = base + info->size - 0x00002000; |
||||
info->start[i--] = base + info->size - 0x00004000; |
||||
info->start[i--] = base + info->size - 0x00006000; |
||||
info->start[i--] = base + info->size - 0x00008000; |
||||
info->start[i--] = base + info->size - 0x0000a000; |
||||
info->start[i--] = base + info->size - 0x0000c000; |
||||
info->start[i--] = base + info->size - 0x0000e000; |
||||
|
||||
for (; i >= 0; i--) |
||||
info->start[i] = base + i * 0x00010000; |
||||
} |
||||
|
||||
/* check for protected sectors */ |
||||
for (i = 0; i < info->sector_count; i++) { |
||||
/* read sector protection at sector address, (A7 .. A0) = 0x02 */ |
||||
/* D0 = 1 if protected */ |
||||
addr2 = (volatile CFG_FLASH_WORD_SIZE *)(info->start[i]); |
||||
|
||||
info->protect[i] = addr2[2] & 1; |
||||
} |
||||
|
||||
/* issue bank reset to return to read mode */ |
||||
addr2[0] = (CFG_FLASH_WORD_SIZE) 0xF000F000; |
||||
|
||||
return (info->size); |
||||
} |
||||
|
||||
static int wait_for_DQ7_16(flash_info_t * info, int sect) |
||||
{ |
||||
ulong start, now, last; |
||||
volatile CFG_FLASH_WORD_SIZE *addr = |
||||
(CFG_FLASH_WORD_SIZE *) (info->start[sect]); |
||||
|
||||
start = get_timer(0); |
||||
last = start; |
||||
while ((addr[0] & (CFG_FLASH_WORD_SIZE) 0x80008000) != |
||||
(CFG_FLASH_WORD_SIZE) 0x80008000) { |
||||
if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) { |
||||
printf("Timeout\n"); |
||||
return -1; |
||||
} |
||||
/* show that we're waiting */ |
||||
if ((now - last) > 1000) { /* every second */ |
||||
putc('.'); |
||||
last = now; |
||||
} |
||||
} |
||||
return 0; |
||||
} |
||||
|
||||
static int flash_erase_16(flash_info_t * info, int s_first, int s_last) |
||||
{ |
||||
volatile CFG_FLASH_WORD_SIZE *addr = (CFG_FLASH_WORD_SIZE *) (info->start[0]); |
||||
volatile CFG_FLASH_WORD_SIZE *addr2; |
||||
int flag, prot, sect, l_sect; |
||||
|
||||
if ((s_first < 0) || (s_first > s_last)) { |
||||
if (info->flash_id == FLASH_UNKNOWN) |
||||
printf("- missing\n"); |
||||
else |
||||
printf("- no sectors to erase\n"); |
||||
return 1; |
||||
} |
||||
|
||||
if (info->flash_id == FLASH_UNKNOWN) { |
||||
printf("Can't erase unknown flash type - aborted\n"); |
||||
return 1; |
||||
} |
||||
|
||||
prot = 0; |
||||
for (sect = s_first; sect <= s_last; ++sect) { |
||||
if (info->protect[sect]) |
||||
prot++; |
||||
} |
||||
|
||||
if (prot) |
||||
printf("- Warning: %d protected sectors will not be erased!", prot); |
||||
|
||||
printf("\n"); |
||||
|
||||
l_sect = -1; |
||||
|
||||
/* Disable interrupts which might cause a timeout here */ |
||||
flag = disable_interrupts(); |
||||
|
||||
/* Start erase on unprotected sectors */ |
||||
for (sect = s_first; sect <= s_last; sect++) { |
||||
if (info->protect[sect] == 0) { /* not protected */ |
||||
addr2 = (CFG_FLASH_WORD_SIZE *) (info->start[sect]); |
||||
|
||||
addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0xAA00AA00; |
||||
addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x55005500; |
||||
addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0x80008000; |
||||
addr[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0xAA00AA00; |
||||
addr[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x55005500; |
||||
addr2[0] = (CFG_FLASH_WORD_SIZE) 0x30003000; /* sector erase */ |
||||
|
||||
l_sect = sect; |
||||
/*
|
||||
* Wait for each sector to complete, it's more |
||||
* reliable. According to AMD Spec, you must |
||||
* issue all erase commands within a specified |
||||
* timeout. This has been seen to fail, especially |
||||
* if printf()s are included (for debug)!! |
||||
*/ |
||||
wait_for_DQ7_16(info, sect); |
||||
} |
||||
} |
||||
|
||||
/* re-enable interrupts if necessary */ |
||||
if (flag) |
||||
enable_interrupts(); |
||||
|
||||
/* wait at least 80us - let's wait 1 ms */ |
||||
udelay(1000); |
||||
|
||||
/* reset to read mode */ |
||||
addr = (CFG_FLASH_WORD_SIZE *) info->start[0]; |
||||
addr[0] = (CFG_FLASH_WORD_SIZE) 0xF000F000; /* reset bank */ |
||||
|
||||
printf(" done\n"); |
||||
return 0; |
||||
} |
||||
|
||||
static int write_word_16(flash_info_t * info, ulong dest, ulong data) |
||||
{ |
||||
volatile CFG_FLASH_WORD_SIZE *addr2 = (CFG_FLASH_WORD_SIZE *) (info->start[0]); |
||||
volatile CFG_FLASH_WORD_SIZE *dest2 = (CFG_FLASH_WORD_SIZE *) dest; |
||||
volatile CFG_FLASH_WORD_SIZE *data2 = (CFG_FLASH_WORD_SIZE *) & data; |
||||
ulong start; |
||||
int i; |
||||
|
||||
/* Check if Flash is (sufficiently) erased */ |
||||
for (i = 0; i < 4 / sizeof(CFG_FLASH_WORD_SIZE); i++) { |
||||
if ((dest2[i] & swap16(data2[i])) != swap16(data2[i])) |
||||
return (2); |
||||
} |
||||
|
||||
for (i = 0; i < 4 / sizeof(CFG_FLASH_WORD_SIZE); i++) { |
||||
int flag; |
||||
|
||||
/* Disable interrupts which might cause a timeout here */ |
||||
flag = disable_interrupts(); |
||||
|
||||
addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0xAA00AA00; |
||||
addr2[CFG_FLASH_ADDR1] = (CFG_FLASH_WORD_SIZE) 0x55005500; |
||||
addr2[CFG_FLASH_ADDR0] = (CFG_FLASH_WORD_SIZE) 0xA000A000; |
||||
|
||||
dest2[i] = swap16(data2[i]); |
||||
|
||||
/* re-enable interrupts if necessary */ |
||||
if (flag) |
||||
enable_interrupts(); |
||||
|
||||
/* data polling for D7 */ |
||||
start = get_timer(0); |
||||
while ((dest2[i] & (CFG_FLASH_WORD_SIZE) 0x80008000) != |
||||
(swap16(data2[i]) & (CFG_FLASH_WORD_SIZE) 0x80008000)) { |
||||
|
||||
if (get_timer(start) > CFG_FLASH_WRITE_TOUT) { |
||||
return (1); |
||||
} |
||||
} |
||||
} |
||||
|
||||
return (0); |
||||
} |
||||
#endif /* CFG_FLASH_2ND_16BIT_DEV */ |
||||
|
||||
/*-----------------------------------------------------------------------
|
||||
* Functions |
||||
*/ |
||||
static ulong flash_get_size(vu_long * addr, flash_info_t * info); |
||||
static int write_word(flash_info_t * info, ulong dest, ulong data); |
||||
|
||||
/*-----------------------------------------------------------------------
|
||||
*/ |
||||
|
||||
unsigned long flash_init(void) |
||||
{ |
||||
unsigned long total_b = 0; |
||||
unsigned long size_b[CFG_MAX_FLASH_BANKS]; |
||||
unsigned short index = 0; |
||||
int i; |
||||
|
||||
DEBUGF("\n"); |
||||
DEBUGF("FLASH: Index: %d\n", index); |
||||
|
||||
/* Init: no FLASHes known */ |
||||
for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) { |
||||
flash_info[i].flash_id = FLASH_UNKNOWN; |
||||
flash_info[i].sector_count = -1; |
||||
flash_info[i].size = 0; |
||||
|
||||
/* check whether the address is 0 */ |
||||
if (flash_addr_table[index][i] == 0) |
||||
continue; |
||||
|
||||
/* call flash_get_size() to initialize sector address */ |
||||
size_b[i] = flash_get_size((vu_long *) flash_addr_table[index][i], |
||||
&flash_info[i]); |
||||
|
||||
flash_info[i].size = size_b[i]; |
||||
|
||||
if (flash_info[i].flash_id == FLASH_UNKNOWN) { |
||||
printf("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n", |
||||
i, size_b[i], size_b[i] << 20); |
||||
flash_info[i].sector_count = -1; |
||||
flash_info[i].size = 0; |
||||
} |
||||
|
||||
/* Monitor protection ON by default */ |
||||
(void)flash_protect(FLAG_PROTECT_SET, CFG_MONITOR_BASE, |
||||
CFG_MONITOR_BASE + CFG_MONITOR_LEN - 1, |
||||
&flash_info[i]); |
||||
#if defined(CFG_ENV_IS_IN_FLASH) |
||||
(void)flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR, |
||||
CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1, |
||||
&flash_info[i]); |
||||
#if defined(CFG_ENV_ADDR_REDUND) |
||||
(void)flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR_REDUND, |
||||
CFG_ENV_ADDR_REDUND + CFG_ENV_SECT_SIZE - 1, |
||||
&flash_info[i]); |
||||
#endif |
||||
#endif |
||||
total_b += flash_info[i].size; |
||||
} |
||||
|
||||
return total_b; |
||||
} |
||||
#endif /* ifdef CONFIG_CAM5200 */ |
||||
Loading…
Reference in new issue