Stefan Reinauer ([email protected]) just uploaded a new patch set to 
gerrit, which you can find at http://review.coreboot.org/993

-gerrit

commit a2d207db706d961acb7efdea5a20bd99c4a645e1
Author: Stefan Reinauer <[email protected]>
Date:   Wed May 2 16:33:18 2012 -0700

    Make CBFS output more consistent
    
    - Prefix all CBFS output messages with CBFS:
    - Add an option DEBUG_CBFS that is off by default. Without DEBUG_CBFS
      enabled, the code will no longer print all the files it walks for
      every file lookup.
    - Add DEBUG() macro next to LOG() and ERROR() to specify which messages
      should only be visible with DEBUG_CBFS printed.
    - Actually print a message when the file we're looking for was found. :)
    
    old:
    Searching for fallback/coreboot_ram
    Check cmos_layout.bin
    Check pci8086,0106.rom
    Check fallback/romstage
    Check fallback/coreboot_ram
    
    Change-Id: I2d731fae17a5f6ca51d435cfb7a58d6e017efa24
    Stage: loading fallback/coreboot_ram @ 0x100000 (540672 bytes), entry @ 
0x100000
    Stage: done loading.
    new:
    CBFS: Looking for 'fallback/coreboot_ram'
    CBFS: found.
    CBFS: loading stage fallback/coreboot_ram @ 0x100000 (507904 bytes), entry 
@ 0x100000
    CBFS: stage loaded.
    Signed-off-by: Stefan Reinauer <[email protected]>
---
 src/Kconfig         |    7 +++++++
 src/lib/cbfs.c      |   17 +++++++++++------
 src/lib/cbfs_core.c |    8 ++++++--
 3 files changed, 24 insertions(+), 8 deletions(-)

diff --git a/src/Kconfig b/src/Kconfig
index d449b30..a6b09dc 100644
--- a/src/Kconfig
+++ b/src/Kconfig
@@ -664,6 +664,13 @@ config GDB_STUB
          If enabled, you will be able to set breakpoints for gdb debugging.
          See src/arch/x86/lib/c_start.S for details.
 
+config DEBUG_CBFS
+       bool "Output verbose CBFS debug messages"
+       default n
+       depends on TPM
+       help
+         This option enables additional CBFS related debug messages.
+
 config HAVE_DEBUG_RAM_SETUP
        def_bool n
 
diff --git a/src/lib/cbfs.c b/src/lib/cbfs.c
index 33fa799..98672d4 100644
--- a/src/lib/cbfs.c
+++ b/src/lib/cbfs.c
@@ -30,8 +30,13 @@
 #endif
 #define phys_to_virt(x) (void*)(x)
 #define virt_to_phys(x) (uint32_t)(x)
-#define ERROR(x...) printk(BIOS_ERR, x)
-#define LOG(x...) printk(BIOS_INFO, x)
+#define ERROR(x...) printk(BIOS_ERR, "CBFS: " x)
+#define LOG(x...) printk(BIOS_INFO, "CBFS: " x)
+#if CONFIG_DEBUG_CBFS
+#define DEBUG(x...) printk(BIOS_SPEW, "CBFS: " x)
+#else
+#define DEBUG(x...)
+#endif
 // FIXME: romstart/romend are fine on x86, but not on ARM
 #define romstart() 0xffffffff
 #define romend() 0
@@ -100,7 +105,7 @@ void * cbfs_load_stage(const char *name)
        if (stage == NULL)
                return (void *) -1;
 
-       printk(BIOS_INFO, "Stage: loading %s @ 0x%x (%d bytes), entry @ 
0x%llx\n",
+       LOG("loading stage %s @ 0x%x (%d bytes), entry @ 0x%llx\n",
                        name,
                        (u32) stage->load, stage->memlen,
                        stage->entry);
@@ -113,7 +118,7 @@ void * cbfs_load_stage(const char *name)
                             stage->len))
                return (void *) -1;
 
-       printk(BIOS_DEBUG, "Stage: done loading.\n");
+       DEBUG("stage loaded.\n");
 
        entry = stage->entry;
        // entry = ntohll(stage->entry);
@@ -130,13 +135,13 @@ int cbfs_execute_stage(const char *name)
                return 1;
 
        if (ntohl(stage->compression) != CBFS_COMPRESS_NONE) {
-               printk(BIOS_INFO,  "CBFS:  Unable to run %s:  Compressed file"
+               LOG("Unable to run %s:  Compressed file"
                       "Not supported for in-place execution\n", name);
                return 1;
        }
 
        /* FIXME: This isn't right */
-       printk(BIOS_INFO,  "CBFS: run @ %p\n", (void *) ntohl((u32) 
stage->entry));
+       LOG("run @ %p\n", (void *) ntohl((u32) stage->entry));
        return run_address((void *) (intptr_t)ntohll(stage->entry));
 }
 
diff --git a/src/lib/cbfs_core.c b/src/lib/cbfs_core.c
index 4bf755b..15cb68e 100644
--- a/src/lib/cbfs_core.c
+++ b/src/lib/cbfs_core.c
@@ -40,6 +40,9 @@
  *      print an error message x (in printf format)
  *
  * LOG(x...)
+ *      print a message x (in printf format)
+ *
+ * DEBUG(x...)
  *      print a debug message x (in printf format)
  *
  * romstart()
@@ -86,7 +89,7 @@ struct cbfs_file *cbfs_find(const char *name)
        struct cbfs_header *header = get_cbfs_header();
        if (header == (void*)0xffffffff) return NULL;
 
-       LOG("Searching for %s\n", name);
+       LOG("Looking for '%s'\n", name);
 
        void *data, *dataend, *origdata;
        /* find first entry */
@@ -111,8 +114,9 @@ struct cbfs_file *cbfs_find(const char *name)
                        data = phys_to_virt(CBFS_ALIGN_UP(virt_to_phys(data), 
align));
                        continue;
                }
-               LOG("Check %s\n", CBFS_NAME(file));
+               DEBUG("Check '%s'\n", CBFS_NAME(file));
                if (strcmp(CBFS_NAME(file), name) == 0) {
+                       LOG("found.\n");
                        return file;
                }
                void *olddata = data;

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