+++ /dev/null
-/*
- *(C) Copyright 2005-2008 Netstal Maschinen AG
- * Niklaus Giger (Niklaus.Giger@netstal.com)
- *
- * This source code is free software; you can redistribute it
- * and/or modify it in source code form under the terms of the GNU
- * General Public License as published by the Free Software
- * Foundation; either version 2 of the License, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
- */
-
-#include <common.h>
-#include <asm/ppc4xx.h>
-#include <asm/processor.h>
-#include <asm/io.h>
-#include <asm/u-boot.h>
-#include "../common/nm.h"
-
-DECLARE_GLOBAL_DATA_PTR;
-
-#define MCU25_SLOT_ADDRESS (0x7A000000 + 0x0A)
-#define MCU25_DIGITAL_IO_REGISTER (0x7A000000 + 0xc0)
-
-#define MCU25_LED_REGISTER_ADDRESS (0x7C000000 + 0x10)
-#define MCU25_VERSIONS_REGISTER (0x7C000000 + 0x0C)
-#define MCU25_IO_CONFIGURATION (0x7C000000 + 0x0e)
-#define MCU_SW_INSTALL_REQUESTED 0x08
-
-#define SDRAM_LEN (32 << 20) /* 32 MB - RAM */
-
-/*
- * This function is run very early, out of flash, and before devices are
- * initialized. It is called by arch/powerpc/lib/board.c:board_init_f by virtue
- * of being in the init_sequence array.
- *
- * The SDRAM has been initialized already -- start.S:start called
- * init.S:init_sdram early on -- but it is not yet being used for
- * anything, not even stack. So be careful.
- */
-
-/* Attention: If you want 1 microsecs times from the external oscillator
- * 0x00004051 is okay for u-boot/linux, but different from old vxworks values
- * 0x00804051 causes problems with u-boot and linux!
- */
-#define CPC0_CR0_VALUE 0x0007F03C
-#define CPC0_CR1_VALUE 0x00004051
-
-int board_early_init_f (void)
-{
- /* Documented in A-1171
- *
- * Interrupt controller setup for the MCU25 board.
- * Note: IRQ 0-15 405GP internally generated; high; level sensitive
- * IRQ 16 405GP internally generated; low; level sensitive
- * IRQ 17-24 RESERVED/UNUSED
- * IRQ 31 (EXT IRQ 6) (unused)
- */
- mtdcr(UIC0SR, 0xFFFFFFFF); /* clear all ints */
- mtdcr(UIC0ER, 0x00000000); /* disable all ints */
- mtdcr(UIC0CR, 0x00000000); /* set all to be non-critical */
- mtdcr(UIC0PR, 0xFFFFE000); /* set int polarities */
- mtdcr(UIC0TR, 0x00000000); /* set int trigger levels */
- mtdcr(UIC0SR, 0xFFFFFFFF); /* clear all ints */
-
- mtdcr(CPC0_CR1, CPC0_CR1_VALUE);
- mtdcr(CPC0_ECR, 0x60606000);
- mtdcr(CPC0_EIRR, 0x7C000000);
- out32(GPIO0_OR, CONFIG_SYS_GPIO0_OR );
- out32(GPIO0_TCR, CONFIG_SYS_GPIO0_TCR);
- out32(GPIO0_ODR, CONFIG_SYS_GPIO0_ODR);
- mtspr(SPRN_CCR0, 0x00700000);
-
- return 0;
-}
-
-#ifdef CONFIG_BOARD_PRE_INIT
-int board_pre_init (void)
-{
- return board_early_init_f ();
-}
-#endif
-
-int sys_install_requested(void)
-{
- u16 ioValue = in_be16((u16 *)MCU25_DIGITAL_IO_REGISTER);
- return (ioValue & MCU_SW_INSTALL_REQUESTED) != 0;
-}
-
-int checkboard (void)
-{
- u16 boardVersReg = in_be16((u16 *)MCU25_VERSIONS_REGISTER);
- u16 hwConfig = in_be16((u16 *)MCU25_IO_CONFIGURATION);
- u16 generation = boardVersReg & 0x0f;
- u16 index = boardVersReg & 0xf0;
-
- /* Cannot be done in board_early_init */
- mtdcr(CPC0_CR0, CPC0_CR0_VALUE);
-
- /* Force /RTS to active. The board it not wired quite
- * correctly to use cts/rtc flow control, so just force the
- * /RST active and forget about it.
- */
- writeb (readb (0xef600404) | 0x03, 0xef600404);
- nm_show_print(generation, index, hwConfig);
- return 0;
-}
-
-u32 hcu_led_get(void)
-{
- return in_be16((u16 *)MCU25_LED_REGISTER_ADDRESS) & 0x3ff;
-}
-
-/*
- * hcu_led_set value to be placed into the LEDs (max 6 bit)
- */
-void hcu_led_set(u32 value)
-{
- out_be16((u16 *)MCU25_LED_REGISTER_ADDRESS, value);
-}
-
-/*
- * hcu_get_slot
- */
-u32 hcu_get_slot(void)
-{
- u16 slot = in_be16((u16 *)MCU25_SLOT_ADDRESS);
- return slot & 0x7f;
-}
-
-/*
- * get_serial_number
- */
-u32 get_serial_number(void)
-{
- u32 serial = in_be32((u32 *)CONFIG_SYS_FLASH_BASE);
-
- if (serial == 0xffffffff)
- return 0;
-
- return serial;
-}
-
-
-/*
- * misc_init_r.
- */
-
-int misc_init_r(void)
-{
- common_misc_init_r();
- set_params_for_sw_install( sys_install_requested(), "mcu25" );
- return 0;
-}
-
-phys_size_t initdram(int board_type)
-{
- unsigned int dram_size = 64*1024*1024;
- init_ppc405_sdram(dram_size);
-
-#ifdef DEBUG
- show_sdram_registers();
-#endif
-
- return dram_size;
-}
-
-#if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
-void ft_board_setup(void *blob, bd_t *bd)
-{
- ft_cpu_setup(blob, bd);
-
-}
-#endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */
-
-/*
- * Hardcoded flash setup:
- * Flash 0 is a non-CFI AMD AM29F040 flash, 8 bit flash / 8 bit bus.
- */
-ulong board_flash_get_legacy (ulong base, int banknum, flash_info_t * info)
-{
- if (banknum == 0) { /* non-CFI boot flash */
- info->portwidth = 1;
- info->chipwidth = 1;
- info->interface = FLASH_CFI_X8;
- return 1;
- } else
- return 0;
-}
projects / karo-tx-uboot.git / blobdiff