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c021880a WD |
1 | /* |
2 | * (C) Copyright 2003 | |
3 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. | |
4 | * | |
5 | * See file CREDITS for list of people who contributed to this | |
6 | * project. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU General Public License as | |
10 | * published by the Free Software Foundation; either version 2 of | |
11 | * the License, or (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
21 | * MA 02111-1307 USA | |
22 | */ | |
23 | ||
24 | #include <common.h> | |
25 | #include <command.h> | |
8218bd2a | 26 | #include <netdev.h> |
c021880a WD |
27 | #include <asm/addrspace.h> |
28 | #include <asm/inca-ip.h> | |
5c15010e | 29 | #include <asm/io.h> |
b0c66af5 | 30 | #include <asm/reboot.h> |
c021880a | 31 | |
85ec0bcc WD |
32 | extern uint incaip_get_cpuclk(void); |
33 | ||
b0c66af5 SK |
34 | void _machine_restart(void) |
35 | { | |
36 | *INCA_IP_WDT_RST_REQ = 0x3f; | |
37 | } | |
38 | ||
c021880a WD |
39 | static ulong max_sdram_size(void) |
40 | { | |
41 | /* The only supported SDRAM data width is 16bit. | |
42 | */ | |
6d0f6bcf | 43 | #define CONFIG_SYS_DW 2 |
c021880a WD |
44 | |
45 | /* The only supported number of SDRAM banks is 4. | |
46 | */ | |
6d0f6bcf | 47 | #define CONFIG_SYS_NB 4 |
c021880a WD |
48 | |
49 | ulong cfgpb0 = *INCA_IP_SDRAM_MC_CFGPB0; | |
50 | int cols = cfgpb0 & 0xF; | |
51 | int rows = (cfgpb0 & 0xF0) >> 4; | |
6d0f6bcf | 52 | ulong size = (1 << (rows + cols)) * CONFIG_SYS_DW * CONFIG_SYS_NB; |
c021880a WD |
53 | |
54 | return size; | |
55 | } | |
56 | ||
9973e3c6 | 57 | phys_size_t initdram(int board_type) |
c021880a WD |
58 | { |
59 | int rows, cols, best_val = *INCA_IP_SDRAM_MC_CFGPB0; | |
60 | ulong size, max_size = 0; | |
61 | ulong our_address; | |
62 | ||
63 | asm volatile ("move %0, $25" : "=r" (our_address) :); | |
64 | ||
65 | /* Can't probe for RAM size unless we are running from Flash. | |
66 | */ | |
7daf2ebe | 67 | if (CPHYSADDR(our_address) < CPHYSADDR(PHYS_FLASH_1)) |
c021880a WD |
68 | { |
69 | return max_sdram_size(); | |
70 | } | |
71 | ||
72 | for (cols = 0x8; cols <= 0xC; cols++) | |
73 | { | |
74 | for (rows = 0xB; rows <= 0xD; rows++) | |
75 | { | |
76 | *INCA_IP_SDRAM_MC_CFGPB0 = (0x14 << 8) | | |
77 | (rows << 4) | cols; | |
6d0f6bcf | 78 | size = get_ram_size((long *)CONFIG_SYS_SDRAM_BASE, |
c021880a WD |
79 | max_sdram_size()); |
80 | ||
81 | if (size > max_size) | |
82 | { | |
83 | best_val = *INCA_IP_SDRAM_MC_CFGPB0; | |
84 | max_size = size; | |
85 | } | |
86 | } | |
87 | } | |
88 | ||
89 | *INCA_IP_SDRAM_MC_CFGPB0 = best_val; | |
90 | return max_size; | |
91 | } | |
92 | ||
85ec0bcc WD |
93 | int checkboard (void) |
94 | { | |
85ec0bcc WD |
95 | unsigned long chipid = *INCA_IP_WDT_CHIPID; |
96 | int part_num; | |
97 | ||
98 | puts ("Board: INCA-IP "); | |
99 | part_num = (chipid >> 12) & 0xffff; | |
100 | switch (part_num) { | |
101 | case 0xc0: | |
102 | printf ("Standard Version, "); | |
103 | break; | |
104 | case 0xc1: | |
105 | printf ("Basic Version, "); | |
106 | break; | |
107 | default: | |
108 | printf ("Unknown Part Number 0x%x ", part_num); | |
109 | break; | |
110 | } | |
111 | ||
112 | printf ("Chip V1.%ld, ", (chipid >> 28)); | |
113 | ||
114 | printf("CPU Speed %d MHz\n", incaip_get_cpuclk()/1000000); | |
115 | ||
5c15010e JCPV |
116 | set_io_port_base(0); |
117 | ||
85ec0bcc WD |
118 | return 0; |
119 | } | |
8218bd2a BW |
120 | |
121 | #if defined(CONFIG_INCA_IP_SWITCH) | |
122 | int board_eth_init(bd_t *bis) | |
123 | { | |
124 | return inca_switch_initialize(bis); | |
125 | } | |
126 | #endif |