2 *(C) Copyright 2005-2008 Netstal Maschinen AG
3 * Niklaus Giger (Niklaus.Giger@netstal.com)
5 * This source code is free software; you can redistribute it
6 * and/or modify it in source code form under the terms of the GNU
7 * General Public License as published by the Free Software
8 * Foundation; either version 2 of the License, or (at your option)
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
23 #include <asm/processor.h>
25 #include <asm/u-boot.h>
26 #include "../common/nm.h"
28 DECLARE_GLOBAL_DATA_PTR
;
30 #define MCU25_SLOT_ADDRESS (0x7A000000 + 0x0A)
31 #define MCU25_DIGITAL_IO_REGISTER (0x7A000000 + 0xc0)
33 #define MCU25_LED_REGISTER_ADDRESS (0x7C000000 + 0x10)
34 #define MCU25_VERSIONS_REGISTER (0x7C000000 + 0x0C)
35 #define MCU25_IO_CONFIGURATION (0x7C000000 + 0x0e)
36 #define MCU_SW_INSTALL_REQUESTED 0x08
38 #define SDRAM_LEN (32 << 20) /* 32 MB - RAM */
41 * This function is run very early, out of flash, and before devices are
42 * initialized. It is called by arch/powerpc/lib/board.c:board_init_f by virtue
43 * of being in the init_sequence array.
45 * The SDRAM has been initialized already -- start.S:start called
46 * init.S:init_sdram early on -- but it is not yet being used for
47 * anything, not even stack. So be careful.
50 /* Attention: If you want 1 microsecs times from the external oscillator
51 * 0x00004051 is okay for u-boot/linux, but different from old vxworks values
52 * 0x00804051 causes problems with u-boot and linux!
54 #define CPC0_CR0_VALUE 0x0007F03C
55 #define CPC0_CR1_VALUE 0x00004051
57 int board_early_init_f (void)
59 /* Documented in A-1171
61 * Interrupt controller setup for the MCU25 board.
62 * Note: IRQ 0-15 405GP internally generated; high; level sensitive
63 * IRQ 16 405GP internally generated; low; level sensitive
64 * IRQ 17-24 RESERVED/UNUSED
65 * IRQ 31 (EXT IRQ 6) (unused)
67 mtdcr(UIC0SR
, 0xFFFFFFFF); /* clear all ints */
68 mtdcr(UIC0ER
, 0x00000000); /* disable all ints */
69 mtdcr(UIC0CR
, 0x00000000); /* set all to be non-critical */
70 mtdcr(UIC0PR
, 0xFFFFE000); /* set int polarities */
71 mtdcr(UIC0TR
, 0x00000000); /* set int trigger levels */
72 mtdcr(UIC0SR
, 0xFFFFFFFF); /* clear all ints */
74 mtdcr(CPC0_CR1
, CPC0_CR1_VALUE
);
75 mtdcr(CPC0_ECR
, 0x60606000);
76 mtdcr(CPC0_EIRR
, 0x7C000000);
77 out32(GPIO0_OR
, CONFIG_SYS_GPIO0_OR
);
78 out32(GPIO0_TCR
, CONFIG_SYS_GPIO0_TCR
);
79 out32(GPIO0_ODR
, CONFIG_SYS_GPIO0_ODR
);
80 mtspr(SPRN_CCR0
, 0x00700000);
85 #ifdef CONFIG_BOARD_PRE_INIT
86 int board_pre_init (void)
88 return board_early_init_f ();
92 int sys_install_requested(void)
94 u16 ioValue
= in_be16((u16
*)MCU25_DIGITAL_IO_REGISTER
);
95 return (ioValue
& MCU_SW_INSTALL_REQUESTED
) != 0;
100 u16 boardVersReg
= in_be16((u16
*)MCU25_VERSIONS_REGISTER
);
101 u16 hwConfig
= in_be16((u16
*)MCU25_IO_CONFIGURATION
);
102 u16 generation
= boardVersReg
& 0x0f;
103 u16 index
= boardVersReg
& 0xf0;
105 /* Cannot be done in board_early_init */
106 mtdcr(CPC0_CR0
, CPC0_CR0_VALUE
);
108 /* Force /RTS to active. The board it not wired quite
109 * correctly to use cts/rtc flow control, so just force the
110 * /RST active and forget about it.
112 writeb (readb (0xef600404) | 0x03, 0xef600404);
113 nm_show_print(generation
, index
, hwConfig
);
117 u32
hcu_led_get(void)
119 return in_be16((u16
*)MCU25_LED_REGISTER_ADDRESS
) & 0x3ff;
123 * hcu_led_set value to be placed into the LEDs (max 6 bit)
125 void hcu_led_set(u32 value
)
127 out_be16((u16
*)MCU25_LED_REGISTER_ADDRESS
, value
);
133 u32
hcu_get_slot(void)
135 u16 slot
= in_be16((u16
*)MCU25_SLOT_ADDRESS
);
142 u32
get_serial_number(void)
144 u32 serial
= in_be32((u32
*)CONFIG_SYS_FLASH_BASE
);
146 if (serial
== 0xffffffff)
157 int misc_init_r(void)
159 common_misc_init_r();
160 set_params_for_sw_install( sys_install_requested(), "mcu25" );
164 phys_size_t
initdram(int board_type
)
166 unsigned int dram_size
= 64*1024*1024;
167 init_ppc405_sdram(dram_size
);
170 show_sdram_registers();
176 #if defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP)
177 void ft_board_setup(void *blob
, bd_t
*bd
)
179 ft_cpu_setup(blob
, bd
);
182 #endif /* defined(CONFIG_OF_LIBFDT) && defined(CONFIG_OF_BOARD_SETUP) */
185 * Hardcoded flash setup:
186 * Flash 0 is a non-CFI AMD AM29F040 flash, 8 bit flash / 8 bit bus.
188 ulong
board_flash_get_legacy (ulong base
, int banknum
, flash_info_t
* info
)
190 if (banknum
== 0) { /* non-CFI boot flash */
193 info
->interface
= FLASH_CFI_X8
;