100 lines
2.3 KiB
C
100 lines
2.3 KiB
C
/*
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* (C) Copyright 2001
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* Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <asm/ppc4xx.h>
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#include <asm/processor.h>
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/*
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* include common flash code (for esd boards)
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*/
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#include "../common/flash.c"
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/*-----------------------------------------------------------------------
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* Functions
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*/
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static ulong flash_get_size (vu_long * addr, flash_info_t * info);
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static void flash_get_offsets (ulong base, flash_info_t * info);
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/*-----------------------------------------------------------------------
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*/
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unsigned long flash_init (void)
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{
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#ifdef __DEBUG_START_FROM_SRAM__
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return CONFIG_SYS_DUMMY_FLASH_SIZE;
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#else
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unsigned long size;
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int i;
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uint pbcr;
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unsigned long base;
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int size_val = 0;
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debug("[%s, %d] Entering ...\n", __FUNCTION__, __LINE__);
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debug("[%s, %d] flash_info = 0x%p ...\n", __func__, __LINE__,
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flash_info);
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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 - FIXME XXX */
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debug("[%s, %d] Calling flash_get_size ...\n", __FUNCTION__, __LINE__);
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size = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]);
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if (flash_info[0].flash_id == FLASH_UNKNOWN) {
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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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debug("[%s, %d] Test point ...\n", __FUNCTION__, __LINE__);
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/* Setup offsets */
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flash_get_offsets (-size, &flash_info[0]);
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debug("[%s, %d] Test point ...\n", __FUNCTION__, __LINE__);
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/* Re-do sizing to get full correct info */
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mtdcr(EBC0_CFGADDR, PB0CR);
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pbcr = mfdcr(EBC0_CFGDATA);
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mtdcr(EBC0_CFGADDR, PB0CR);
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base = -size;
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switch (size) {
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case 1 << 20:
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size_val = 0;
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break;
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case 2 << 20:
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size_val = 1;
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break;
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case 4 << 20:
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size_val = 2;
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break;
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case 8 << 20:
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size_val = 3;
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break;
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case 16 << 20:
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size_val = 4;
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break;
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}
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pbcr = (pbcr & 0x0001ffff) | base | (size_val << 17);
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mtdcr(EBC0_CFGDATA, pbcr);
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debug("[%s, %d] Test point ...\n", __FUNCTION__, __LINE__);
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/* Monitor protection ON by default */
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(void)flash_protect(FLAG_PROTECT_SET,
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-CONFIG_SYS_MONITOR_LEN,
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0xffffffff,
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&flash_info[0]);
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debug("[%s, %d] Test point ...\n", __FUNCTION__, __LINE__);
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flash_info[0].size = size;
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return (size);
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#endif
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}
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