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-rw-r--r--arch/mips/wrppmc/setup.c128
1 files changed, 128 insertions, 0 deletions
diff --git a/arch/mips/wrppmc/setup.c b/arch/mips/wrppmc/setup.c
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+++ b/arch/mips/wrppmc/setup.c
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+/*
+ * setup.c: Setup pointers to hardware dependent routines.
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1996, 1997, 2004 by Ralf Baechle (ralf@linux-mips.org)
+ * Copyright (C) 2006, Wind River System Inc. Rongkai.zhan <rongkai.zhan@windriver.com>
+ */
+#include <linux/init.h>
+#include <linux/string.h>
+#include <linux/kernel.h>
+#include <linux/pm.h>
+
+#include <asm/io.h>
+#include <asm/bootinfo.h>
+#include <asm/reboot.h>
+#include <asm/time.h>
+#include <asm/gt64120.h>
+
+unsigned long gt64120_base = KSEG1ADDR(0x14000000);
+
+#ifdef WRPPMC_EARLY_DEBUG
+
+static volatile unsigned char * wrppmc_led = \
+ (volatile unsigned char *)KSEG1ADDR(WRPPMC_LED_BASE);
+
+/*
+ * PPMC LED control register:
+ * -) bit[0] controls DS1 LED (1 - OFF, 0 - ON)
+ * -) bit[1] controls DS2 LED (1 - OFF, 0 - ON)
+ * -) bit[2] controls DS4 LED (1 - OFF, 0 - ON)
+ */
+void wrppmc_led_on(int mask)
+{
+ unsigned char value = *wrppmc_led;
+
+ value &= (0xF8 | mask);
+ *wrppmc_led = value;
+}
+
+/* If mask = 0, turn off all LEDs */
+void wrppmc_led_off(int mask)
+{
+ unsigned char value = *wrppmc_led;
+
+ value |= (0x7 & mask);
+ *wrppmc_led = value;
+}
+
+/*
+ * We assume that bootloader has initialized UART16550 correctly
+ */
+void __init wrppmc_early_putc(char ch)
+{
+ static volatile unsigned char *wrppmc_uart = \
+ (volatile unsigned char *)KSEG1ADDR(WRPPMC_UART16550_BASE);
+ unsigned char value;
+
+ /* Wait until Transmit-Holding-Register is empty */
+ while (1) {
+ value = *(wrppmc_uart + 5);
+ if (value & 0x20)
+ break;
+ }
+
+ *wrppmc_uart = ch;
+}
+
+void __init wrppmc_early_printk(const char *fmt, ...)
+{
+ static char pbuf[256] = {'\0', };
+ char *ch = pbuf;
+ va_list args;
+ unsigned int i;
+
+ memset(pbuf, 0, 256);
+ va_start(args, fmt);
+ i = vsprintf(pbuf, fmt, args);
+ va_end(args);
+
+ /* Print the string */
+ while (*ch != '\0') {
+ wrppmc_early_putc(*ch);
+ /* if print '\n', also print '\r' */
+ if (*ch++ == '\n')
+ wrppmc_early_putc('\r');
+ }
+}
+#endif /* WRPPMC_EARLY_DEBUG */
+
+void __init prom_free_prom_memory(void)
+{
+}
+
+void __init plat_mem_setup(void)
+{
+ extern void wrppmc_machine_restart(char *command);
+ extern void wrppmc_machine_halt(void);
+
+ _machine_restart = wrppmc_machine_restart;
+ _machine_halt = wrppmc_machine_halt;
+ pm_power_off = wrppmc_machine_halt;
+
+ /* This makes the operations of 'in/out[bwl]' to the
+ * physical address ( < KSEG0) can work via KSEG1
+ */
+ set_io_port_base(KSEG1);
+}
+
+const char *get_system_type(void)
+{
+ return "Wind River PPMC (GT64120)";
+}
+
+/*
+ * Initializes basic routines and structures pointers, memory size (as
+ * given by the bios and saves the command line.
+ */
+void __init prom_init(void)
+{
+ add_memory_region(WRPPMC_SDRAM_SCS0_BASE, WRPPMC_SDRAM_SCS0_SIZE, BOOT_MEM_RAM);
+ add_memory_region(WRPPMC_BOOTROM_BASE, WRPPMC_BOOTROM_SIZE, BOOT_MEM_ROM_DATA);
+
+ wrppmc_early_printk("prom_init: GT64120 SDRAM Bank 0: 0x%x - 0x%08lx\n",
+ WRPPMC_SDRAM_SCS0_BASE, (WRPPMC_SDRAM_SCS0_BASE + WRPPMC_SDRAM_SCS0_SIZE));
+}