Merge remote-tracking branch 'remotes/yongbok/tags/mips-20170728' into staging

MIPS patches 2017-07-28

Changes:
* Improve ths MIPS board kernel load error reporting
* Revert unnecessary warning messages

# gpg: Signature made Fri 28 Jul 2017 13:47:52 BST
# gpg:                using RSA key 0x2238EB86D5F797C2
# gpg: Good signature from "Yongbok Kim <yongbok.kim@imgtec.com>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 8600 4CF5 3415 A5D9 4CFA  2B5C 2238 EB86 D5F7 97C2

* remotes/yongbok/tags/mips-20170728:
  Revert "elf-loader: warn about invalid endianness"
  hw/mips: load_elf_strerror to report kernel loading failure

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

hw/core/loader.c

@@ -480,7 +480,6 @@ int load_elf_ram(const char *filename,
     }
 
     if (target_data_order != e_ident[EI_DATA]) {
-        fprintf(stderr, "%s: wrong endianness\n", filename);
         ret = ELF_LOAD_WRONG_ENDIAN;
         goto fail;
     }

hw/mips/mips_fulong2e.c

@@ -110,16 +110,19 @@ static int64_t load_kernel (CPUMIPSState *env)
 {
     int64_t kernel_entry, kernel_low, kernel_high;
     int index = 0;
-    long initrd_size;
+    long kernel_size, initrd_size;
     ram_addr_t initrd_offset;
     uint32_t *prom_buf;
     long prom_size;
 
-    if (load_elf(loaderparams.kernel_filename, cpu_mips_kseg0_to_phys, NULL,
-                 (uint64_t *)&kernel_entry, (uint64_t *)&kernel_low,
-                 (uint64_t *)&kernel_high, 0, EM_MIPS, 1, 0) < 0) {
-        fprintf(stderr, "qemu: could not load kernel '%s'\n",
-                loaderparams.kernel_filename);
+    kernel_size = load_elf(loaderparams.kernel_filename, cpu_mips_kseg0_to_phys,
+                           NULL, (uint64_t *)&kernel_entry,
+                           (uint64_t *)&kernel_low, (uint64_t *)&kernel_high,
+                           0, EM_MIPS, 1, 0);
+    if (kernel_size < 0) {
+        error_report("qemu: could not load kernel '%s': %s",
+                     loaderparams.kernel_filename,
+                     load_elf_strerror(kernel_size));
         exit(1);
     }
 

hw/mips/mips_malta.c

@@ -794,7 +794,7 @@ static void GCC_FMT_ATTR(3, 4) prom_set(uint32_t* prom_buf, int index,
 static int64_t load_kernel (void)
 {
     int64_t kernel_entry, kernel_high;
-    long initrd_size;
+    long kernel_size, initrd_size;
     ram_addr_t initrd_offset;
     int big_endian;
     uint32_t *prom_buf;
@@ -808,11 +808,13 @@ static int64_t load_kernel (void)
     big_endian = 0;
 #endif
 
-    if (load_elf(loaderparams.kernel_filename, cpu_mips_kseg0_to_phys, NULL,
-                 (uint64_t *)&kernel_entry, NULL, (uint64_t *)&kernel_high,
-                 big_endian, EM_MIPS, 1, 0) < 0) {
-        fprintf(stderr, "qemu: could not load kernel '%s'\n",
-                loaderparams.kernel_filename);
+    kernel_size = load_elf(loaderparams.kernel_filename, cpu_mips_kseg0_to_phys,
+                           NULL, (uint64_t *)&kernel_entry, NULL,
+                           (uint64_t *)&kernel_high, big_endian, EM_MIPS, 1, 0);
+    if (kernel_size < 0) {
+        error_report("qemu: could not load kernel '%s': %s",
+                     loaderparams.kernel_filename,
+                     load_elf_strerror(kernel_size));
         exit(1);
     }
 

hw/mips/mips_mipssim.c

@@ -78,8 +78,9 @@ static int64_t load_kernel(void)
         if ((entry & ~0x7fffffffULL) == 0x80000000)
             entry = (int32_t)entry;
     } else {
-        fprintf(stderr, "qemu: could not load kernel '%s'\n",
-                loaderparams.kernel_filename);
+        error_report("qemu: could not load kernel '%s': %s",
+                     loaderparams.kernel_filename,
+                     load_elf_strerror(kernel_size));
         exit(1);
     }
 

hw/mips/mips_r4k.c

@@ -31,6 +31,7 @@
 #include "sysemu/block-backend.h"
 #include "exec/address-spaces.h"
 #include "sysemu/qtest.h"
+#include "qemu/error-report.h"
 
 #define MAX_IDE_BUS 2
 
@@ -96,8 +97,9 @@ static int64_t load_kernel(void)
         if ((entry & ~0x7fffffffULL) == 0x80000000)
             entry = (int32_t)entry;
     } else {
-        fprintf(stderr, "qemu: could not load kernel '%s'\n",
-                loaderparams.kernel_filename);
+        error_report("qemu: could not load kernel '%s': %s",
+                     loaderparams.kernel_filename,
+                     load_elf_strerror(kernel_size));
         exit(1);
     }