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Viewing changes to roms/u-boot/board/esd/pci405/flash.c

  • Committer: Phil Dennis-Jordan
  • Date: 2017-07-21 08:03:43 UTC
  • mfrom: (1.1.1)
  • Revision ID: phil@philjordan.eu-20170721080343-2yr2vdj7713czahv
New upstream release 2.9.0.

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roms/u-boot/board/esd/pci405/flash.c
 
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/*
 
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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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        unsigned long size_b0;
 
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        int i;
 
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        uint pbcr;
 
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        unsigned long base_b0;
 
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        int size_val = 0;
 
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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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        size_b0 = 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_b0, size_b0<<20);
 
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        }
 
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        /* Setup offsets */
 
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        flash_get_offsets (-size_b0, &flash_info[0]);
 
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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_b0 = -size_b0;
 
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        switch (size_b0) {
 
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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_b0 | (size_val << 17);
 
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        mtdcr(EBC0_CFGDATA, pbcr);
 
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        /* Monitor protection ON by default */
 
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        (void)flash_protect(FLAG_PROTECT_SET,
 
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                            -monitor_flash_len,
 
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                            0xffffffff,
 
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                            &flash_info[0]);
 
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        flash_info[0].size = size_b0;
 
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        return (size_b0);
 
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}