[ARM] 4515/1: S3C: Move uncompress code to plat-s3c
Ben Dooks [Sun, 22 Jul 2007 15:13:29 +0000 (16:13 +0100)]
Move the uncompress.h to plat-s3c

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

include/asm-arm/arch-s3c2410/uncompress.h
include/asm-arm/plat-s3c/uncompress.h [new file with mode: 0644]

index d78f3dc..22328b7 100644 (file)
 #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/plat-s3c/regs-serial.h"
-#include "asm/arch/regs-gpio.h"
-#include "asm/plat-s3c/regs-watchdog.h"
-
+#include <asm/arch/regs-gpio.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)))
+
+#include <asm/plat-s3c/uncompress.h>
 
 /* how many bytes we allow into the FIFO at a time in FIFO mode */
 #define FIFO_MAX        (14)
 
-#define uart_base S3C24XX_PA_UART + (0x4000*CONFIG_S3C_LOWLEVEL_UART_PORT)
-
-static __inline__ void
-uart_wr(unsigned int reg, unsigned int val)
-{
-       volatile unsigned int *ptr;
-
-       ptr = (volatile unsigned int *)(reg + uart_base);
-       *ptr = val;
-}
-
-static __inline__ unsigned int
-uart_rd(unsigned int reg)
-{
-       volatile unsigned int *ptr;
-
-       ptr = (volatile unsigned int *)(reg + uart_base);
-       return *ptr;
-}
-
-
-/* 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(int ch)
+static void arch_detect_cpu(void)
 {
-       int cpuid = S3C2410_GSTATUS1_2410;
+       unsigned int cpuid;
 
-#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);
-
-                       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;
-               }
 
+       if (cpuid == S3C2410_GSTATUS1_2440 ||
+           cpuid == S3C2410_GSTATUS1_2442) {
+               fifo_mask = S3C2440_UFSTAT_TXMASK;
+               fifo_max = 63 << S3C2440_UFSTAT_TXSHIFT;
        } else {
-               /* not using fifos */
-
-               while ((uart_rd(S3C2410_UTRSTAT) & S3C2410_UTRSTAT_TXE) != S3C2410_UTRSTAT_TXE)
-                       barrier();
+               fifo_mask = S3C2410_UFSTAT_TXMASK;
+               fifo_max = 15 << S3C2410_UFSTAT_TXSHIFT;
        }
-
-       /* 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
-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.
-        */
-
-       arch_decomp_wdog_start();
-}
-
-
 #endif /* __ASM_ARCH_UNCOMPRESS_H */
diff --git a/include/asm-arm/plat-s3c/uncompress.h b/include/asm-arm/plat-s3c/uncompress.h
new file mode 100644 (file)
index 0000000..bc6817f
--- /dev/null
@@ -0,0 +1,155 @@
+/* linux/include/asm-arm/plat-s3c/uncompress.h
+ *
+ * Copyright 2003, 2007 Simtec Electronics
+ *     http://armlinux.simtec.co.uk/
+ *     Ben Dooks <ben@simtec.co.uk>
+ *
+ * S3C - 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.
+*/
+
+#ifndef __ASM_PLAT_UNCOMPRESS_H
+#define __ASM_PLAT_UNCOMPRESS_H
+
+typedef unsigned int upf_t;    /* cannot include linux/serial_core.h */
+
+/* uart setup */
+
+static unsigned int fifo_mask;
+static unsigned int fifo_max;
+
+/* forward declerations */
+
+static void arch_detect_cpu(void);
+
+/* defines for UART registers */
+
+#include "asm/plat-s3c/regs-serial.h"
+#include "asm/plat-s3c/regs-watchdog.h"
+
+/* working in physical space... */
+#undef S3C2410_WDOGREG
+#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)
+
+#define uart_base S3C24XX_PA_UART + (0x4000*CONFIG_S3C_LOWLEVEL_UART_PORT)
+
+static __inline__ void
+uart_wr(unsigned int reg, unsigned int val)
+{
+       volatile unsigned int *ptr;
+
+       ptr = (volatile unsigned int *)(reg + uart_base);
+       *ptr = val;
+}
+
+static __inline__ unsigned int
+uart_rd(unsigned int reg)
+{
+       volatile unsigned int *ptr;
+
+       ptr = (volatile unsigned int *)(reg + uart_base);
+       return *ptr;
+}
+
+/* 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(int ch)
+{
+       if (uart_rd(S3C2410_UFCON) & S3C2410_UFCON_FIFOMODE) {
+               int level;
+
+               while (1) {
+                       level = uart_rd(S3C2410_UFSTAT);
+                       level &= fifo_mask;
+
+                       if (level < fifo_max)
+                               break;
+               }
+
+       } else {
+               /* not using fifos */
+
+               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
+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.
+        */
+
+       arch_detect_cpu();
+       arch_decomp_wdog_start();
+}
+
+
+#endif /* __ASM_PLAT_UNCOMPRESS_H */