[ar71xx] fix handling of invalid arguments passed by some bootloaders (thanks to...

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@14382 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/ar71xx/files-2.6.28/arch/mips/include/asm/mach-ar71xx/ar71xx.h b/target/linux/ar71xx/files-2.6.28/arch/mips/include/asm/mach-ar71xx/ar71xx.h
index 5aba593..a4e6ed3 100644 (file)
--- a/target/linux/ar71xx/files-2.6.28/arch/mips/include/asm/mach-ar71xx/ar71xx.h
+++ b/target/linux/ar71xx/files-2.6.28/arch/mips/include/asm/mach-ar71xx/ar71xx.h
@@ -59,6 +59,9 @@
 #define AR91XX_WMAC_BASE       (AR71XX_APB_BASE + 0x000C0000)
 #define AR91XX_WMAC_SIZE       0x30000
 
+#define AR71XX_MEM_SIZE_MIN    0x0200000
+#define AR71XX_MEM_SIZE_MAX    0x8000000
+
 #define AR71XX_CPU_IRQ_BASE    0
 #define AR71XX_MISC_IRQ_BASE   8
 #define AR71XX_MISC_IRQ_COUNT  8

diff --git a/target/linux/ar71xx/files/arch/mips/ar71xx/prom.c b/target/linux/ar71xx/files/arch/mips/ar71xx/prom.c
index 8e93807..5402e0a 100644 (file)
--- a/target/linux/ar71xx/files/arch/mips/ar71xx/prom.c
+++ b/target/linux/ar71xx/files/arch/mips/ar71xx/prom.c
@@ -73,18 +73,31 @@ static struct board_rec boards[] __initdata = {
        }
 };
 
+static inline int is_valid_ram_addr(void *addr)
+{
+       if (((u32) addr > KSEG0) &&
+           ((u32) addr < (KSEG0 + AR71XX_MEM_SIZE_MAX)))
+               return 1;
+
+       if (((u32) addr > KSEG1) &&
+           ((u32) addr < (KSEG1 + AR71XX_MEM_SIZE_MAX)))
+               return 1;
+
+       return 0;
+}
+
 static __init char *ar71xx_prom_getargv(const char *name)
 {
        int len = strlen(name);
        int i;
 
-       if (!ar71xx_prom_argv)
+       if (!is_valid_ram_addr(ar71xx_prom_argv))
                return NULL;
 
        for (i = 0; i < ar71xx_prom_argc; i++) {
                char *argv = ar71xx_prom_argv[i];
 
-               if (!argv)
+               if (!is_valid_ram_addr(argv))
                        continue;
 
                if (strncmp(name, argv, len) == 0 && (argv)[len] == '=')
@@ -99,10 +112,10 @@ static __init char *ar71xx_prom_getenv(const char *envname)
        int len = strlen(envname);
        char **env;
 
-       if (!ar71xx_prom_envp)
+       if (!is_valid_ram_addr(ar71xx_prom_envp))
                return NULL;
 
-       for (env = ar71xx_prom_envp; *env != NULL; env++)
+       for (env = ar71xx_prom_envp; is_valid_ram_addr(*env); env++)
                if (strncmp(envname, *env, len) == 0 && (*env)[len] == '=')
                        return *env + len + 1;
 

diff --git a/target/linux/ar71xx/files/arch/mips/ar71xx/setup.c b/target/linux/ar71xx/files/arch/mips/ar71xx/setup.c
index a83f7d1..40b1178 100644 (file)
--- a/target/linux/ar71xx/files/arch/mips/ar71xx/setup.c
+++ b/target/linux/ar71xx/files/arch/mips/ar71xx/setup.c
@@ -1,7 +1,7 @@
 /*
  *  Atheros AR71xx SoC specific setup
  *
- *  Copyright (C) 2008 Gabor Juhos <juhosg@openwrt.org>
+ *  Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org>
  *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
  *
  *  Parts of this file are based on Atheros' 2.6.15 BSP
@@ -33,9 +33,6 @@
 #define AR71XX_BASE_FREQ       40000000
 #define AR91XX_BASE_FREQ       5000000
 
-#define AR71XX_MEM_SIZE_MIN    0x0200000
-#define AR71XX_MEM_SIZE_MAX    0x8000000
-
 unsigned long ar71xx_mach_type;
 
 u32 ar71xx_cpu_freq;

diff --git a/target/linux/ar71xx/files/include/asm-mips/mach-ar71xx/ar71xx.h b/target/linux/ar71xx/files/include/asm-mips/mach-ar71xx/ar71xx.h
index 5aba593..a4e6ed3 100644 (file)
--- a/target/linux/ar71xx/files/include/asm-mips/mach-ar71xx/ar71xx.h
+++ b/target/linux/ar71xx/files/include/asm-mips/mach-ar71xx/ar71xx.h
@@ -59,6 +59,9 @@
 #define AR91XX_WMAC_BASE       (AR71XX_APB_BASE + 0x000C0000)
 #define AR91XX_WMAC_SIZE       0x30000
 
+#define AR71XX_MEM_SIZE_MIN    0x0200000
+#define AR71XX_MEM_SIZE_MAX    0x8000000
+
 #define AR71XX_CPU_IRQ_BASE    0
 #define AR71XX_MISC_IRQ_BASE   8
 #define AR71XX_MISC_IRQ_COUNT  8