fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / include / asm-arm / arch-s3c2410 / uncompress.h

diff --git a/include/asm-arm/arch-s3c2410/uncompress.h b/include/asm-arm/arch-s3c2410/uncompress.h
index 023f22b..dcb2cef 100644 (file)
--- a/include/asm-arm/arch-s3c2410/uncompress.h
+++ b/include/asm-arm/arch-s3c2410/uncompress.h
@@ -1,36 +1,38 @@
 /* linux/include/asm-arm/arch-s3c2410/uncompress.h
  *
- * (c) 2003 Simtec Electronics
- *    Ben Dooks <ben@simtec.co.uk>
+ * Copyright (c) 2003 Simtec Electronics
+ *     Ben Dooks <ben@simtec.co.uk>
  *
  * S3C2410 - uncompress code
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
- *
- * Changelog:
- *  22-May-2003 BJD  Created
- *  08-Sep-2003 BJD  Moved to linux v2.6
- *  12-Mar-2004 BJD  Updated header protection
 */
 
 #ifndef __ASM_ARCH_UNCOMPRESS_H
 #define __ASM_ARCH_UNCOMPRESS_H
 
+typedef unsigned int upf_t;    /* cannot include linux/serial_core.h */
+
 /* defines for UART registers */
 #include "asm/arch/regs-serial.h"
+#include "asm/arch/regs-gpio.h"
+#include "asm/arch/regs-watchdog.h"
 
 #include <asm/arch/map.h>
 
+/* working in physical space... */
+#undef S3C2410_GPIOREG
+#undef S3C2410_WDOGREG
+
+#define S3C2410_GPIOREG(x) ((S3C24XX_PA_GPIO + (x)))
+#define S3C2410_WDOGREG(x) ((S3C24XX_PA_WATCHDOG + (x)))
+
 /* how many bytes we allow into the FIFO at a time in FIFO mode */
 #define FIFO_MAX        (14)
 
-#if 1
-#define uart_base S3C2410_PA_UART
-#else
-static unsigned int uart_base = S3C2410_PA_UART;
-#endif
+#define uart_base S3C24XX_PA_UART + (0x4000*CONFIG_S3C2410_LOWLEVEL_UART_PORT)
 
 static __inline__ void
 uart_wr(unsigned int reg, unsigned int val)
@@ -51,39 +53,34 @@ uart_rd(unsigned int reg)
 }
 
 
-/* currently we do not need the watchdog... */
-#define arch_decomp_wdog()
-
-
-static void error(char *err);
-
-static void
-arch_decomp_setup(void)
-{
-       /* we may need to setup the uart(s) here if we are not running
-        * on an BAST... the BAST will have left the uarts configured
-        * after calling linux.
-        */
-}
-
 /* we can deal with the case the UARTs are being run
  * in FIFO mode, so that we don't hold up our execution
  * waiting for tx to happen...
 */
 
-static void
-putc(char ch)
+static void putc(int ch)
 {
-       if (ch == '\n')
-               putc('\r');    /* expand newline to \r\n */
+       int cpuid = S3C2410_GSTATUS1_2410;
+
+#ifndef CONFIG_CPU_S3C2400
+       cpuid = *((volatile unsigned int *)S3C2410_GSTATUS1);
+       cpuid &= S3C2410_GSTATUS1_IDMASK;
+#endif
 
        if (uart_rd(S3C2410_UFCON) & S3C2410_UFCON_FIFOMODE) {
                int level;
 
                while (1) {
                        level = uart_rd(S3C2410_UFSTAT);
-                       level &= S3C2410_UFSTAT_TXMASK;
-                       level >>= S3C2410_UFSTAT_TXSHIFT;
+
+                       if (cpuid == S3C2410_GSTATUS1_2440 ||
+                           cpuid == S3C2410_GSTATUS1_2442) {
+                               level &= S3C2440_UFSTAT_TXMASK;
+                               level >>= S3C2440_UFSTAT_TXSHIFT;
+                       } else {
+                               level &= S3C2410_UFSTAT_TXMASK;
+                               level >>= S3C2410_UFSTAT_TXSHIFT;
+                       }
 
                        if (level < FIFO_MAX)
                                break;
@@ -92,19 +89,77 @@ putc(char ch)
        } else {
                /* not using fifos */
 
-               while ((uart_rd(S3C2410_UTRSTAT) & S3C2410_UTRSTAT_TXFE) != S3C2410_UTRSTAT_TXFE);
+               while ((uart_rd(S3C2410_UTRSTAT) & S3C2410_UTRSTAT_TXE) != S3C2410_UTRSTAT_TXE)
+                       barrier();
        }
 
        /* write byte to transmission register */
        uart_wr(S3C2410_UTXH, ch);
 }
 
+static inline void flush(void)
+{
+}
+
+#define __raw_writel(d,ad) do { *((volatile unsigned int *)(ad)) = (d); } while(0)
+
+/* CONFIG_S3C2410_BOOT_WATCHDOG
+ *
+ * Simple boot-time watchdog setup, to reboot the system if there is
+ * any problem with the boot process
+*/
+
+#ifdef CONFIG_S3C2410_BOOT_WATCHDOG
+
+#define WDOG_COUNT (0xff00)
+
+static inline void arch_decomp_wdog(void)
+{
+       __raw_writel(WDOG_COUNT, S3C2410_WTCNT);
+}
+
+static void arch_decomp_wdog_start(void)
+{
+       __raw_writel(WDOG_COUNT, S3C2410_WTDAT);
+       __raw_writel(WDOG_COUNT, S3C2410_WTCNT);
+       __raw_writel(S3C2410_WTCON_ENABLE | S3C2410_WTCON_DIV128 | S3C2410_WTCON_RSTEN | S3C2410_WTCON_PRESCALE(0x80), S3C2410_WTCON);
+}
+
+#else
+#define arch_decomp_wdog_start()
+#define arch_decomp_wdog()
+#endif
+
+#ifdef CONFIG_S3C2410_BOOT_ERROR_RESET
+
+static void arch_decomp_error(const char *x)
+{
+       putstr("\n\n");
+       putstr(x);
+       putstr("\n\n -- System resetting\n");
+
+       __raw_writel(0x4000, S3C2410_WTDAT);
+       __raw_writel(0x4000, S3C2410_WTCNT);
+       __raw_writel(S3C2410_WTCON_ENABLE | S3C2410_WTCON_DIV128 | S3C2410_WTCON_RSTEN | S3C2410_WTCON_PRESCALE(0x40), S3C2410_WTCON);
+
+       while(1);
+}
+
+#define arch_error arch_decomp_error
+#endif
+
+static void error(char *err);
+
 static void
-putstr(const char *ptr)
+arch_decomp_setup(void)
 {
-       for (; *ptr != '\0'; ptr++) {
-               putc(*ptr);
-       }
+       /* we may need to setup the uart(s) here if we are not running
+        * on an BAST... the BAST will have left the uarts configured
+        * after calling linux.
+        */
+
+       arch_decomp_wdog_start();
 }
 
+
 #endif /* __ASM_ARCH_UNCOMPRESS_H */