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-rw-r--r--board/stamp/stamp.c278
1 files changed, 278 insertions, 0 deletions
diff --git a/board/stamp/stamp.c b/board/stamp/stamp.c
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--- /dev/null
+++ b/board/stamp/stamp.c
@@ -0,0 +1,278 @@
+/*
+ * U-boot - stamp.c STAMP board specific routines
+ *
+ * Copyright (c) 2005 blackfin.uclinux.org
+ *
+ * (C) Copyright 2000-2004
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it 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 <asm/mem_init.h>
+#include "stamp.h"
+
+#define STATUS_LED_OFF 0
+#define STATUS_LED_ON 1
+
+#ifdef CONFIG_SHOW_BOOT_PROGRESS
+# define SHOW_BOOT_PROGRESS(arg) show_boot_progress(arg)
+#else
+# define SHOW_BOOT_PROGRESS(arg)
+#endif
+
+int checkboard(void)
+{
+ printf("CPU: ADSP BF533 Rev.: 0.%d\n", *pCHIPID >> 28);
+ printf("Board: ADI BF533 Stamp board\n");
+ printf(" Support: http://blackfin.uclinux.org/\n");
+ printf(" Richard Klingler <richard@uclinux.net>\n");
+ return 0;
+}
+
+long int initdram(int board_type)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+#ifdef DEBUG
+ printf("SDRAM attributes:\n");
+ printf(" tRCD:%d Cycles; tRP:%d Cycles; tRAS:%d Cycles; tWR:%d Cycles; "
+ "CAS Latency:%d cycles\n", (SDRAM_tRCD >> 15), (SDRAM_tRP >> 11),
+ (SDRAM_tRAS >> 6), ( SDRAM_tWR >> 19), (SDRAM_CL >> 2 ));
+ printf("SDRAM Begin: 0x%x\n", CFG_SDRAM_BASE);
+ printf("Bank size = %d MB\n", 128);
+#endif
+ gd->bd->bi_memstart = CFG_SDRAM_BASE;
+ gd->bd->bi_memsize = CFG_MAX_RAM_SIZE;
+ return (gd->bd->bi_memsize);
+}
+
+void swap_to(int device_id)
+{
+
+ if (device_id == ETHERNET)
+ {
+ *pFIO_DIR = PF0;
+ asm("ssync;");
+ *pFIO_FLAG_S = PF0;
+ asm("ssync;");
+ }
+ else if (device_id == FLASH)
+ {
+ *pFIO_DIR = (PF4 | PF3 | PF2 | PF1 | PF0);
+ *pFIO_FLAG_S = (PF4 | PF3 | PF2 );
+ *pFIO_MASKA_D = (PF8 | PF6 | PF5);
+ *pFIO_MASKB_D = (PF7);
+ *pFIO_POLAR = (PF8 | PF6 | PF5 );
+ *pFIO_EDGE = (PF8 | PF7 | PF6 | PF5);
+ *pFIO_INEN = (PF8 | PF7 | PF6 | PF5);
+ *pFIO_FLAG_D = (PF4 | PF3 | PF2 );
+ asm("ssync;");
+ }
+ else {
+ printf("Unknown bank to switch\n");
+ }
+
+ return;
+}
+
+#if defined(CONFIG_MISC_INIT_R)
+/* miscellaneous platform dependent initialisations */
+int misc_init_r(void)
+{
+ int i;
+ int cf_stat = 0;
+
+ /* Check whether CF card is inserted */
+ *pFIO_EDGE = FIO_EDGE_CF_BITS;
+ *pFIO_POLAR = FIO_POLAR_CF_BITS;
+ for (i=0; i < 0x300 ; i++) asm("nop;");
+
+ if ( (*pFIO_FLAG_S) & CF_STAT_BITS)
+ {
+ cf_stat = 0;
+ }
+ else
+ {
+ cf_stat = 1;
+ }
+
+ *pFIO_EDGE = FIO_EDGE_BITS;
+ *pFIO_POLAR = FIO_POLAR_BITS;
+
+
+ if (cf_stat)
+ {
+ printf ("Booting from COMPACT flash\n");
+
+ /* Set cycle time for CF */
+ *(volatile unsigned long *) ambctl1 = CF_AMBCTL1VAL;
+
+ for (i=0; i < 0x1000 ; i++) asm("nop;");
+ for (i=0; i < 0x1000 ; i++) asm("nop;");
+ for (i=0; i < 0x1000 ; i++) asm("nop;");
+
+ serial_setbrg();
+ ide_init();
+
+ setenv ("bootargs", "");
+ setenv ("bootcmd", "fatload ide 0:1 0x1000000 uImage-stamp;bootm 0x1000000;bootm 0x20100000" );
+ }
+ else
+ {
+ printf ("Booting from FLASH\n");
+ }
+
+ return 1;
+}
+#endif
+
+#ifdef CONFIG_STAMP_CF
+
+void cf_outb(unsigned char val, volatile unsigned char* addr)
+{
+ /*
+ * Set PF1 PF0 respectively to 0 1 to divert address
+ * to the expansion memory banks
+ */
+ *pFIO_FLAG_S = CF_PF0;
+ *pFIO_FLAG_C = CF_PF1;
+ asm("ssync;");
+
+ *(addr) = val;
+ asm("ssync;");
+
+ /* Setback PF1 PF0 to 0 0 to address external
+ * memory banks */
+ *(volatile unsigned short *) pFIO_FLAG_C = CF_PF1_PF0;
+ asm("ssync;");
+}
+
+unsigned char cf_inb(volatile unsigned char *addr)
+{
+ volatile unsigned char c;
+
+ *pFIO_FLAG_S = CF_PF0;
+ *pFIO_FLAG_C = CF_PF1;
+ asm("ssync;");
+
+ c = *(addr);
+ asm("ssync;");
+
+ *pFIO_FLAG_C = CF_PF1_PF0;
+ asm("ssync;");
+
+ return c;
+}
+
+void cf_insw(unsigned short *sect_buf, unsigned short *addr, int words)
+{
+ int i;
+
+ *pFIO_FLAG_S = CF_PF0;
+ *pFIO_FLAG_C = CF_PF1;
+ asm("ssync;");
+
+ for (i = 0;i < words; i++)
+ {
+ *(sect_buf + i) = *(addr);
+ asm("ssync;");
+ }
+
+ *pFIO_FLAG_C = CF_PF1_PF0;
+ asm("ssync;");
+}
+
+void cf_outsw(unsigned short *addr, unsigned short *sect_buf, int words)
+{
+ int i;
+
+ *pFIO_FLAG_S = CF_PF0;
+ *pFIO_FLAG_C = CF_PF1;
+ asm("ssync;");
+
+ for (i = 0;i < words; i++)
+ {
+ *(addr) = *(sect_buf + i);
+ asm("ssync;");
+ }
+
+ *pFIO_FLAG_C = CF_PF1_PF0;
+ asm("ssync;");
+}
+#endif
+
+void stamp_led_set(int LED1, int LED2, int LED3)
+{
+ *pFIO_INEN &= ~( PF2 | PF3 | PF4);
+ *pFIO_DIR |= ( PF2 | PF3 | PF4);
+
+ if(LED1 == STATUS_LED_OFF)
+ *pFIO_FLAG_S = PF2;
+ else
+ *pFIO_FLAG_C = PF2;
+ if(LED2 == STATUS_LED_OFF)
+ *pFIO_FLAG_S = PF3;
+ else
+ *pFIO_FLAG_C = PF3;
+ if(LED3 == STATUS_LED_OFF)
+ *pFIO_FLAG_S = PF4;
+ else
+ *pFIO_FLAG_C = PF4;
+ asm("ssync;");
+}
+
+void show_boot_progress(int status)
+{
+ switch(status){
+ case 1:
+ stamp_led_set(STATUS_LED_OFF,STATUS_LED_OFF,STATUS_LED_ON);
+ break;
+ case 2:
+ stamp_led_set(STATUS_LED_OFF,STATUS_LED_ON,STATUS_LED_OFF);
+ break;
+ case 3:
+ stamp_led_set(STATUS_LED_OFF,STATUS_LED_ON,STATUS_LED_ON);
+ break;
+ case 4:
+ stamp_led_set(STATUS_LED_ON,STATUS_LED_OFF,STATUS_LED_OFF);
+ break;
+ case 5:
+ case 6:
+ stamp_led_set(STATUS_LED_ON,STATUS_LED_OFF,STATUS_LED_ON);
+ break;
+ case 7:
+ case 8:
+ stamp_led_set(STATUS_LED_ON,STATUS_LED_ON,STATUS_LED_OFF);
+ break;
+ case 9:
+ case 10:
+ case 11:
+ case 12:
+ case 13:
+ case 14:
+ case 15:
+ stamp_led_set(STATUS_LED_OFF,STATUS_LED_OFF,STATUS_LED_OFF);
+ break;
+ default:
+ stamp_led_set(STATUS_LED_ON,STATUS_LED_ON,STATUS_LED_ON);
+ break;
+ }
+}
+
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