108 lines
2.9 KiB
C
108 lines
2.9 KiB
C
/*
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* Copyright (C) 2009 Matthias Kaehlcke <matthias@kaehlcke.net>
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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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*/
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#include <common.h>
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#include <driver.h>
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#include <environment.h>
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#include <fs.h>
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#include <init.h>
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#include <partition.h>
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#include <asm/armlinux.h>
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#include <io.h>
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#include <generated/mach-types.h>
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#include <mach/ep93xx-regs.h>
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#include "edb93xx.h"
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#define DEVCFG_U1EN (1 << 18)
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static int ep93xx_mem_init(void)
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{
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arm_add_mem_device("ram0", CONFIG_EP93XX_SDRAM_BANK0_BASE,
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CONFIG_EP93XX_SDRAM_BANK0_SIZE);
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#if (CONFIG_EP93XX_SDRAM_NUM_BANKS >= 2)
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arm_add_mem_device("ram1", CONFIG_EP93XX_SDRAM_BANK1_BASE,
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CONFIG_EP93XX_SDRAM_BANK1_SIZE);
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#endif
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#if (CONFIG_EP93XX_SDRAM_NUM_BANKS >= 3)
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arm_add_mem_device("ram2", CONFIG_EP93XX_SDRAM_BANK2_BASE,
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CONFIG_EP93XX_SDRAM_BANK2_SIZE);
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#endif
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#if (CONFIG_EP93XX_SDRAM_NUM_BANKS == 4)
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arm_add_mem_device("ram3", CONFIG_EP93XX_SDRAM_BANK3_BASE,
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CONFIG_EP93XX_SDRAM_BANK2_SIZE);
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#endif
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return 0;
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}
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mem_initcall(ep93xx_mem_init);
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static int ep93xx_devices_init(void)
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{
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add_cfi_flash_device(DEVICE_ID_DYNAMIC, 0x60000000, EDB93XX_CFI_FLASH_SIZE, 0);
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/*
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* Create partitions that should be
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* not touched by any regular user
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*/
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devfs_add_partition("nor0", 0x00000, 0x40000, DEVFS_PARTITION_FIXED, "self0");
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devfs_add_partition("nor0", 0x40000, 0x20000, DEVFS_PARTITION_FIXED, "env0");
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protect_file("/dev/env0", 1);
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/*
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* Up to 32MiB NOR type flash, connected to
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* CS line 6, data width is 16 bit
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*/
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add_generic_device("ep93xx_eth", DEVICE_ID_DYNAMIC, NULL, 0, 0, IORESOURCE_MEM,
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NULL);
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armlinux_set_bootparams((void *)CONFIG_EP93XX_SDRAM_BANK0_BASE + 0x100);
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armlinux_set_architecture(MACH_TYPE);
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return 0;
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}
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device_initcall(ep93xx_devices_init);
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static int edb93xx_console_init(void)
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{
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struct syscon_regs *syscon = (struct syscon_regs *)SYSCON_BASE;
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/*
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* set UARTBAUD bit to drive UARTs with 14.7456MHz instead of
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* 14.7456/2 MHz
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*/
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uint32_t value = readl(&syscon->pwrcnt);
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value |= SYSCON_PWRCNT_UART_BAUD;
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writel(value, &syscon->pwrcnt);
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/* Enable UART1 */
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value = readl(&syscon->devicecfg);
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value |= DEVCFG_U1EN;
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writel(0xAA, &syscon->sysswlock);
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writel(value, &syscon->devicecfg);
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add_generic_device("pl010_serial", DEVICE_ID_DYNAMIC, NULL, UART1_BASE, 4096,
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IORESOURCE_MEM, NULL);
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return 0;
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}
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console_initcall(edb93xx_console_init);
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