3 * Graeme Russ, graeme.russ@gmail.com.
5 * See file CREDITS for list of people who contributed to this
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.
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.
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,
26 #include <asm/ic/sc520.h>
28 #ifdef CONFIG_HW_WATCHDOG
34 DECLARE_GLOBAL_DATA_PTR;
36 #undef SC520_CDP_DEBUG
38 #ifdef SC520_CDP_DEBUG
39 #define PRINTF(fmt,args...) printf (fmt ,##args)
41 #define PRINTF(fmt,args...)
44 unsigned long monitor_flash_len = CONFIG_SYS_MONITOR_LEN;
46 void init_sc520_enet (void)
48 /* Set CPU Speed to 100MHz */
49 sc520_mmcr->cpuctl = 0x01;
50 gd->cpu_clk = 100000000;
52 /* wait at least one millisecond */
53 asm("movl $0x2000,%%ecx\n"
56 "loop 0b\n": : : "ecx");
58 /* turn on the SDRAM write buffer */
59 sc520_mmcr->dbctl = 0x11;
61 /* turn on the cache and disable write through */
62 asm("movl %%cr0, %%eax\n"
63 "andl $0x9fffffff, %%eax\n"
64 "movl %%eax, %%cr0\n" : : : "eax");
68 * Miscellaneous platform dependent initializations
74 sc520_mmcr->gpcsrt = 0x01; /* GP Chip Select Recovery Time */
75 sc520_mmcr->gpcspw = 0x07; /* GP Chip Select Pulse Width */
76 sc520_mmcr->gpcsoff = 0x00; /* GP Chip Select Offset */
77 sc520_mmcr->gprdw = 0x05; /* GP Read pulse width */
78 sc520_mmcr->gprdoff = 0x01; /* GP Read offset */
79 sc520_mmcr->gpwrw = 0x05; /* GP Write pulse width */
80 sc520_mmcr->gpwroff = 0x01; /* GP Write offset */
82 sc520_mmcr->piodata15_0 = 0x0630; /* PIO15_PIO0 Data */
83 sc520_mmcr->piodata31_16 = 0x2000; /* PIO31_PIO16 Data */
84 sc520_mmcr->piodir31_16 = 0x2000; /* GPIO Direction */
85 sc520_mmcr->piodir15_0 = 0x87b5; /* GPIO Direction */
86 sc520_mmcr->piopfs31_16 = 0x0dfe; /* GPIO pin function 31-16 reg */
87 sc520_mmcr->piopfs15_0 = 0x200a; /* GPIO pin function 15-0 reg */
88 sc520_mmcr->cspfs = 0x00f8; /* Chip Select Pin Function Select */
90 sc520_mmcr->par[2] = 0x200713f8; /* Uart A (GPCS0, 0x013f8, 8 Bytes) */
91 sc520_mmcr->par[3] = 0x2c0712f8; /* Uart B (GPCS3, 0x012f8, 8 Bytes) */
92 sc520_mmcr->par[4] = 0x300711f8; /* Uart C (GPCS4, 0x011f8, 8 Bytes) */
93 sc520_mmcr->par[5] = 0x340710f8; /* Uart D (GPCS5, 0x010f8, 8 Bytes) */
94 sc520_mmcr->par[6] = 0xe3ffc000; /* SDRAM (0x00000000, 128MB) */
95 sc520_mmcr->par[7] = 0xaa3fd000; /* StrataFlash (ROMCS1, 0x10000000, 16MB) */
96 sc520_mmcr->par[8] = 0xca3fd100; /* StrataFlash (ROMCS2, 0x11000000, 16MB) */
97 sc520_mmcr->par[9] = 0x4203d900; /* SRAM (GPCS0, 0x19000000, 1MB) */
98 sc520_mmcr->par[10] = 0x4e03d910; /* SRAM (GPCS3, 0x19100000, 1MB) */
99 sc520_mmcr->par[11] = 0x50018100; /* DP-RAM (GPCS4, 0x18100000, 4kB) */
100 sc520_mmcr->par[12] = 0x54020000; /* CFLASH1 (0x200000000, 4kB) */
101 sc520_mmcr->par[13] = 0x5c020001; /* CFLASH2 (0x200010000, 4kB) */
102 /* sc520_mmcr->par14 = 0x8bfff800; */ /* BOOTCS at 0x18000000 */
103 /* sc520_mmcr->par15 = 0x38201000; */ /* LEDs etc (GPCS6, 0x1000, 20 Bytes */
105 /* Disable Watchdog */
106 sc520_mmcr->wdtmrctl = 0x3333;
107 sc520_mmcr->wdtmrctl = 0xcccc;
108 sc520_mmcr->wdtmrctl = 0x0000;
110 /* Chip Select Configuration */
111 sc520_mmcr->bootcsctl = 0x0033;
112 sc520_mmcr->romcs1ctl = 0x0615;
113 sc520_mmcr->romcs2ctl = 0x0615;
115 sc520_mmcr->adddecctl = 0x02;
116 sc520_mmcr->uart1ctl = 0x07;
117 sc520_mmcr->sysarbctl = 0x06;
118 sc520_mmcr->sysarbmenb = 0x0003;
120 /* Crystal is 33.000MHz */
121 gd->bus_clk = 33000000;
132 void show_boot_progress(int val)
139 led_mask |= LED_ERR_BITMASK;
141 led_mask |= (uchar)(val & 0x001f);
142 outb(led_mask, LED_LATCH_ADDRESS);
146 int last_stage_init(void)
153 printf("Serck Controls eNET\n");
158 ulong board_flash_get_legacy (ulong base, int banknum, flash_info_t * info)
160 if (banknum == 0) { /* non-CFI boot flash */
161 info->portwidth = FLASH_CFI_8BIT;
162 info->chipwidth = FLASH_CFI_BY8;
163 info->interface = FLASH_CFI_X8;