2 * The generic setup file for PMC-Sierra MSP processors
4 * Copyright 2005-2007 PMC-Sierra, Inc,
5 * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
13 #include <asm/bootinfo.h>
14 #include <asm/cacheflush.h>
15 #include <asm/r4kcache.h>
16 #include <asm/reboot.h>
22 #if defined(CONFIG_PMC_MSP7120_GW)
23 #include <msp_regops.h>
25 #define MSP_BOARD_RESET_GPIO 9
28 extern void msp_timer_init(void);
29 extern void msp_serial_setup(void);
30 extern void pmctwiled_setup(void);
32 #if defined(CONFIG_PMC_MSP7120_EVAL) || \
33 defined(CONFIG_PMC_MSP7120_GW) || \
34 defined(CONFIG_PMC_MSP7120_FPGA)
36 * Performs the reset for MSP7120-based boards
38 void msp7120_reset(void)
40 void *start
, *end
, *iptr
;
43 /* Diasble all interrupts */
45 #ifdef CONFIG_SYS_SUPPORTS_MULTITHREADING
49 /* Cache the reset code of this function */
50 __asm__
__volatile__ (
53 " la %0,startpoint \n"
56 : "=r" (start
), "=r" (end
)
60 for (iptr
= (void *)((unsigned int)start
& ~(L1_CACHE_BYTES
- 1));
61 iptr
< end
; iptr
+= L1_CACHE_BYTES
)
64 __asm__
__volatile__ (
68 /* Put the DDRC into self-refresh mode */
69 DDRC_INDIRECT_WRITE(DDRC_CTL(10), 0xb, 1 << 16);
73 * DO NOT do anything from here on out that might even
74 * think about fetching from RAM - i.e., don't call any
75 * non-inlined functions, and be VERY sure that any inline
76 * functions you do call do NOT access any sort of RAM
80 /* Wait a bit for the DDRC to settle */
81 for (i
= 0; i
< 100000000; i
++);
83 #if defined(CONFIG_PMC_MSP7120_GW)
85 * Set GPIO 9 HI, (tied to board reset logic)
86 * GPIO 9 is the 4th GPIO of register 3
88 * NOTE: We cannot use the higher-level msp_gpio_mode()/out()
89 * as GPIO char driver may not be enabled and it would look up
92 set_value_reg32(GPIO_CFG3_REG
,
93 basic_mode_mask(MSP_BOARD_RESET_GPIO
),
94 basic_mode(MSP_GPIO_OUTPUT
, MSP_BOARD_RESET_GPIO
));
95 set_reg32(GPIO_DATA3_REG
,
96 basic_data_mask(MSP_BOARD_RESET_GPIO
));
99 * In case GPIO9 doesn't reset the board (jumper configurable!)
100 * fallback to device reset below.
103 /* Set bit 1 of the MSP7120 reset register */
104 *RST_SET_REG
= 0x00000001;
106 __asm__
__volatile__ (
112 void msp_restart(char *command
)
114 printk(KERN_WARNING
"Now rebooting .......\n");
116 #if defined(CONFIG_PMC_MSP7120_EVAL) || \
117 defined(CONFIG_PMC_MSP7120_GW) || \
118 defined(CONFIG_PMC_MSP7120_FPGA)
121 /* No chip-specific reset code, just jump to the ROM reset vector */
122 set_c0_status(ST0_BEV
| ST0_ERL
);
123 change_c0_config(CONF_CM_CMASK
, CONF_CM_UNCACHED
);
127 __asm__
__volatile__("jr\t%0"::"r"(0xbfc00000));
133 printk(KERN_WARNING
"\n** You can safely turn off the power\n");
135 /* If possible call official function to get CPU WARs */
139 __asm__(".set\tmips3\n\t" "wait\n\t" ".set\tmips0");
142 void msp_power_off(void)
147 void __init
plat_mem_setup(void)
149 _machine_restart
= msp_restart
;
150 _machine_halt
= msp_halt
;
151 pm_power_off
= msp_power_off
;
153 board_time_init
= msp_timer_init
;
156 void __init
prom_init(void)
158 unsigned long family
;
159 unsigned long revision
;
162 prom_argv
= (char **)fw_arg1
;
163 prom_envp
= (char **)fw_arg2
;
166 * Someday we can use this with PMON2000 to get a
167 * platform call prom routines for output etc. without
168 * having to use grody hacks. For now it's unused.
170 * struct callvectors *cv = (struct callvectors *) fw_arg3;
172 family
= identify_family();
173 revision
= identify_revision();
177 if (FPGA_IS_MSP4200(revision
)) {
178 /* Old-style revision ID */
179 mips_machgroup
= MACH_GROUP_MSP
;
180 mips_machtype
= MACH_MSP4200_FPGA
;
182 mips_machgroup
= MACH_GROUP_MSP
;
183 mips_machtype
= MACH_MSP_OTHER
;
188 mips_machgroup
= MACH_GROUP_MSP
;
189 #if defined(CONFIG_PMC_MSP4200_EVAL)
190 mips_machtype
= MACH_MSP4200_EVAL
;
191 #elif defined(CONFIG_PMC_MSP4200_GW)
192 mips_machtype
= MACH_MSP4200_GW
;
194 mips_machtype
= MACH_MSP_OTHER
;
198 case FAMILY_MSP4200_FPGA
:
199 mips_machgroup
= MACH_GROUP_MSP
;
200 mips_machtype
= MACH_MSP4200_FPGA
;
204 mips_machgroup
= MACH_GROUP_MSP
;
205 #if defined(CONFIG_PMC_MSP7120_EVAL)
206 mips_machtype
= MACH_MSP7120_EVAL
;
207 #elif defined(CONFIG_PMC_MSP7120_GW)
208 mips_machtype
= MACH_MSP7120_GW
;
210 mips_machtype
= MACH_MSP_OTHER
;
214 case FAMILY_MSP7100_FPGA
:
215 mips_machgroup
= MACH_GROUP_MSP
;
216 mips_machtype
= MACH_MSP7120_FPGA
;
220 /* we don't recognize the machine */
221 mips_machgroup
= MACH_GROUP_UNKNOWN
;
222 mips_machtype
= MACH_UNKNOWN
;
226 /* make sure we have the right initialization routine - sanity */
227 if (mips_machgroup
!= MACH_GROUP_MSP
) {
228 ppfinit("Unknown machine group in a "
229 "MSP initialization routine\n");
230 panic("***Bogosity factor five***, exiting\n");
238 * Sub-system setup follows.
239 * Setup functions can either be called here or using the
240 * subsys_initcall mechanism (i.e. see msp_pci_setup). The
241 * order in which they are called can be changed by using the
242 * link order in arch/mips/pmc-sierra/msp71xx/Makefile.
244 * NOTE: Please keep sub-system specific initialization code
245 * in separate specific files.
249 #ifdef CONFIG_PMCTWILED
251 * Setup LED states before the subsys_initcall loads other
252 * dependant drivers/modules.