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Diffstat (limited to 'board/netstal/mcu25/mcu25.c')
| -rw-r--r-- | board/netstal/mcu25/mcu25.c | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/board/netstal/mcu25/mcu25.c b/board/netstal/mcu25/mcu25.c new file mode 100644 index 0000000..dd7bd83 --- /dev/null +++ b/board/netstal/mcu25/mcu25.c @@ -0,0 +1,218 @@ +/* + *(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 <ppc4xx.h> +#include <asm/processor.h> +#include <asm/io.h> +#include <asm-ppc/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 lib_ppc/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(uicsr, 0xFFFFFFFF); /* clear all ints */ + mtdcr(uicer, 0x00000000); /* disable all ints */ + mtdcr(uiccr, 0x00000000); /* set all to be non-critical */ + mtdcr(uicpr, 0xFFFFE000); /* set int polarities */ + mtdcr(uictr, 0x00000000); /* set int trigger levels */ + mtdcr(uicsr, 0xFFFFFFFF); /* clear all ints */ + + mtdcr(cntrl1, CPC0_CR1_VALUE); + mtdcr(ecr, 0x60606000); + mtdcr(CPC0_EIRR, 0x7C000000); + out32(GPIO0_OR, CFG_GPIO0_OR ); + out32(GPIO0_TCR, CFG_GPIO0_TCR); + out32(GPIO0_ODR, CFG_GPIO0_ODR); + mtspr(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(cntrl0, 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); +} + +/* + * sdram_init - Dummy implementation for start.S, spd_sdram or initdram + * used for HCUx + */ +void sdram_init(void) +{ + return; +} + +/* + * 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 *)CFG_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; +} + +long int 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_POST) +/* + * Returns 1 if keys pressed to start the power-on long-running tests + * Called from board_init_f(). + */ +int post_hotkeys_pressed(void) +{ + return 0; /* No hotkeys supported */ +} +#endif /* CONFIG_POST */ + +#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; +} + |