[POWERPC] bootwrapper: Add a fatal error helper

Add a macro fatal that calls printf then exit.  User must include stdio.h.

Typically replaces 3 lines with 1, although I added back some whitespace.

Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>

4 files changed, 28 insertions, 47 deletions

diff --git a/arch/powerpc/boot/gunzip_util.c b/arch/powerpc/boot/gunzip_util.c
index f7c95f24fcdd..8a97adfac659 100644
--- a/arch/powerpc/boot/gunzip_util.c
+++ b/arch/powerpc/boot/gunzip_util.c
@@ -52,18 +52,14 @@ void gunzip_start(struct gunzip_state *state, void *src, int srclen)
                 int r, flags;
 
                 state->s.workspace = state->scratch;
-                if (zlib_inflate_workspacesize() > sizeof(state->scratch)) {
-                        printf("insufficient scratch space for gunzip\n\r");
-                        exit();
-                }
+                if (zlib_inflate_workspacesize() > sizeof(state->scratch))
+                        fatal("insufficient scratch space for gunzip\n\r");
 
                 /* skip header */
                 hdrlen = 10;
                 flags = hdr[3];
-                if (hdr[2] != Z_DEFLATED || (flags & RESERVED) != 0) {
-                        printf("bad gzipped data\n\r");
-                        exit();
-                }
+                if (hdr[2] != Z_DEFLATED || (flags & RESERVED) != 0)
+                        fatal("bad gzipped data\n\r");
                 if ((flags & EXTRA_FIELD) != 0)
                         hdrlen = 12 + hdr[10] + (hdr[11] << 8);
                 if ((flags & ORIG_NAME) != 0)
@@ -74,16 +70,12 @@ void gunzip_start(struct gunzip_state *state, void *src, int srclen)
                                 ;
                 if ((flags & HEAD_CRC) != 0)
                         hdrlen += 2;
-                if (hdrlen >= srclen) {
-                        printf("gunzip_start: ran out of data in header\n\r");
-                        exit();
-                }
+                if (hdrlen >= srclen)
+                        fatal("gunzip_start: ran out of data in header\n\r");
 
                 r = zlib_inflateInit2(&state->s, -MAX_WBITS);
-                if (r != Z_OK) {
-                        printf("inflateInit2 returned %d\n\r", r);
-                        exit();
-                }
+                if (r != Z_OK)
+                        fatal("inflateInit2 returned %d\n\r", r);
         }
 
         state->s.next_in = src + hdrlen;
@@ -117,10 +109,8 @@ int gunzip_partial(struct gunzip_state *state, void *dst, int dstlen)
                 state->s.next_out = dst;
                 state->s.avail_out = dstlen;
                 r = zlib_inflate(&state->s, Z_FULL_FLUSH);
-                if (r != Z_OK && r != Z_STREAM_END) {
-                        printf("inflate returned %d msg: %s\n\r", r, state->s.msg);
-                        exit();
-                }
+                if (r != Z_OK && r != Z_STREAM_END)
+                        fatal("inflate returned %d msg: %s\n\r", r, state->s.msg);
                 len = state->s.next_out - (unsigned char *)dst;
         } else {
                 /* uncompressed image */
@@ -151,10 +141,8 @@ void gunzip_exactly(struct gunzip_state *state, void *dst, int dstlen)
         int len;
 
         len  = gunzip_partial(state, dst, dstlen);
-        if (len < dstlen) {
-                printf("gunzip_block: ran out of data\n\r");
-                exit();
-        }
+        if (len < dstlen)
+                fatal("gunzip_block: ran out of data\n\r");
 }
 
 /**
diff --git a/arch/powerpc/boot/main.c b/arch/powerpc/boot/main.c
index d872b758ef14..df9e95a84015 100644
--- a/arch/powerpc/boot/main.c
+++ b/arch/powerpc/boot/main.c
@@ -118,10 +118,9 @@ static struct addr_range prep_kernel(void)
         gunzip_start(&gzstate, vmlinuz_addr, vmlinuz_size);
         gunzip_exactly(&gzstate, elfheader, sizeof(elfheader));
 
-        if (!parse_elf64(elfheader, &ei) && !parse_elf32(elfheader, &ei)) {
-                printf("Error: not a valid PPC32 or PPC64 ELF file!\n\r");
-                exit();
-        }
+        if (!parse_elf64(elfheader, &ei) && !parse_elf32(elfheader, &ei))
+                fatal("Error: not a valid PPC32 or PPC64 ELF file!\n\r");
+
         if (platform_ops.image_hdr)
                 platform_ops.image_hdr(elfheader);
 
@@ -135,11 +134,9 @@ static struct addr_range prep_kernel(void)
         if (platform_ops.vmlinux_alloc) {
                 addr = platform_ops.vmlinux_alloc(ei.memsize);
         } else {
-                if ((unsigned long)_start < ei.memsize) {
-                        printf("Insufficient memory for kernel at address 0!"
+                if ((unsigned long)_start < ei.memsize)
+                        fatal("Insufficient memory for kernel at address 0!"
                                " (_start=%lx)\n\r", _start);
-                        exit();
-                }
         }
 
         /* Finally, gunzip the kernel */
@@ -189,11 +186,9 @@ static struct addr_range prep_initrd(struct addr_range vmlinux,
                 printf("Allocating 0x%lx bytes for initrd ...\n\r",
                        initrd_size);
                 initrd_addr = (unsigned long)malloc(initrd_size);
-                if (! initrd_addr) {
-                        printf("Can't allocate memory for initial "
+                if (! initrd_addr)
+                        fatal("Can't allocate memory for initial "
                                "ramdisk !\n\r");
-                        exit();
-                }
                 printf("Relocating initrd 0x%p <- 0x%p (0x%lx bytes)\n\r",
                        initrd_addr, old_addr, initrd_size);
                 memmove((void *)initrd_addr, old_addr, initrd_size);
@@ -203,10 +198,8 @@ static struct addr_range prep_initrd(struct addr_range vmlinux,
 
         /* Tell the kernel initrd address via device tree */
         devp = finddevice("/chosen");
-        if (! devp) {
-                printf("Device tree has no chosen node!\n\r");
-                exit();
-        }
+        if (! devp)
+                fatal("Device tree has no chosen node!\n\r");
 
         initrd_start = (u32)initrd_addr;
         initrd_end = (u32)initrd_addr + initrd_size;
@@ -303,7 +296,6 @@ void start(void *sp)
                 kentry((unsigned long)initrd.addr, initrd.size,
                        loader_info.promptr);
 
-        /* console closed so printf below may not work */
-        printf("Error: Linux kernel returned to zImage boot wrapper!\n\r");
-        exit();
+        /* console closed so printf in fatal below may not work */
+        fatal("Error: Linux kernel returned to zImage boot wrapper!\n\r");
 }
diff --git a/arch/powerpc/boot/of.c b/arch/powerpc/boot/of.c
index c6f0d9701485..2cec5c17fb60 100644
--- a/arch/powerpc/boot/of.c
+++ b/arch/powerpc/boot/of.c
@@ -212,10 +212,9 @@ static void *of_vmlinux_alloc(unsigned long size)
 {
         void *p = malloc(size);
 
-        if (!p) {
-                printf("Can't allocate memory for kernel image!\n\r");
-                exit();
-        }
+        if (!p)
+                fatal("Can't allocate memory for kernel image!\n\r");
+
         return p;
 }
 
diff --git a/arch/powerpc/boot/ops.h b/arch/powerpc/boot/ops.h
index 93608b772db5..ea5368caca59 100644
--- a/arch/powerpc/boot/ops.h
+++ b/arch/powerpc/boot/ops.h
@@ -158,6 +158,8 @@ static inline void exit(void)
                 platform_ops.exit();
         for(;;);
 }
+#define fatal(args...) { printf(args); exit(); }
+
 
 #define BSS_STACK(size) \
         static char _bss_stack[size]; \