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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118 lines
3.5 KiB
118 lines
3.5 KiB
/*
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* (C) Copyright 2002
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* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
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* Marius Groeger <mgroeger@sysgo.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 <asm/arch/AT91RM9200.h>
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/* ------------------------------------------------------------------------- */
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/*
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* Miscelaneous platform dependent initialisations
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*/
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int board_init (void)
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{
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DECLARE_GLOBAL_DATA_PTR;
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/* Enable Ctrlc */
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console_init_f ();
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/* Correct IRDA resistor problem */
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/* Set PA23_TXD in Output */
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(AT91PS_PIO) AT91C_BASE_PIOA->PIO_OER = AT91C_PA23_TXD2;
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/* memory and cpu-speed are setup before relocation */
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/* so we do _nothing_ here */
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/* arch number of AT91RM9200DK-Board */
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gd->bd->bi_arch_number = MACH_TYPE_AT91RM9200;
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/* adress of boot parameters */
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gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
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return 0;
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}
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int dram_init (void)
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{
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DECLARE_GLOBAL_DATA_PTR;
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gd->bd->bi_dram[0].start = PHYS_SDRAM;
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gd->bd->bi_dram[0].size = PHYS_SDRAM_SIZE;
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return 0;
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}
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/*
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* Disk On Chip (NAND) Millenium initialization.
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* The NAND lives in the CS2* space
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*/
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#if (CONFIG_COMMANDS & CFG_CMD_NAND)
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extern ulong nand_probe (ulong physadr);
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#define AT91_SMARTMEDIA_BASE 0x40000000 /* physical address to access memory on NCS3 */
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void nand_init (void)
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{
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/* Setup Smart Media, fitst enable the address range of CS3 */
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*AT91C_EBI_CSA |= AT91C_EBI_CS3A_SMC_SmartMedia;
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/* set the bus interface characteristics based on
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tDS Data Set up Time 30 - ns
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tDH Data Hold Time 20 - ns
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tALS ALE Set up Time 20 - ns
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16ns at 60 MHz ~= 3 */
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/*memory mapping structures */
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#define SM_ID_RWH (5 << 28)
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#define SM_RWH (1 << 28)
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#define SM_RWS (0 << 24)
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#define SM_TDF (1 << 8)
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#define SM_NWS (3)
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AT91C_BASE_SMC2->SMC2_CSR[3] = (SM_RWH | SM_RWS |
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AT91C_SMC2_ACSS_STANDARD | AT91C_SMC2_DBW_8 |
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SM_TDF | AT91C_SMC2_WSEN | SM_NWS);
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/* enable the SMOE line PC0=SMCE, A21=CLE, A22=ALE */
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*AT91C_PIOC_ASR = AT91C_PC0_BFCK | AT91C_PC1_BFRDY_SMOE |
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AT91C_PC3_BFBAA_SMWE;
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*AT91C_PIOC_PDR = AT91C_PC0_BFCK | AT91C_PC1_BFRDY_SMOE |
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AT91C_PC3_BFBAA_SMWE;
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/* Configure PC2 as input (signal READY of the SmartMedia) */
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*AT91C_PIOC_PER = AT91C_PC2_BFAVD; /* enable direct output enable */
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*AT91C_PIOC_ODR = AT91C_PC2_BFAVD; /* disable output */
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/* Configure PB1 as input (signal Card Detect of the SmartMedia) */
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*AT91C_PIOB_PER = AT91C_PIO_PB1; /* enable direct output enable */
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*AT91C_PIOB_ODR = AT91C_PIO_PB1; /* disable output */
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/* PIOB and PIOC clock enabling */
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*AT91C_PMC_PCER = 1 << AT91C_ID_PIOB;
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*AT91C_PMC_PCER = 1 << AT91C_ID_PIOC;
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if (*AT91C_PIOB_PDSR & AT91C_PIO_PB1)
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printf (" No SmartMedia card inserted\n");
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#ifdef DEBUG
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printf (" SmartMedia card inserted\n");
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printf ("Probing at 0x%.8x\n", AT91_SMARTMEDIA_BASE);
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#endif
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printf ("%4lu MB\n", nand_probe(AT91_SMARTMEDIA_BASE) >> 20);
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}
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#endif
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