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authorSam Ravnborg <sam@ravnborg.org>2008-11-29 22:16:52 -0800
committerDavid S. Miller <davem@davemloft.net>2008-12-04 09:17:17 -0800
commit5de18cde3b748aafc6d187d7655ba42f2260501d (patch)
treefa4805081e6663b10be678c924a0adc3c7a95107 /arch/sparc/prom/bootstr_64.c
parentsparc: prepare prom/ for unification (diff)
downloadlinux-dev-5de18cde3b748aafc6d187d7655ba42f2260501d.tar.xz
linux-dev-5de18cde3b748aafc6d187d7655ba42f2260501d.zip
sparc,sparc64: unify prom/
- all files with identical names copied and renamed to *_64.c - the remaning files copied as is - added sparc64 specific files to sparc/prom/Makefile - teach sparc64 Makefile to look into sparc/prom/ - delete unused Makefile from sparc64/prom/ linking order was not kept for sparc64 with this change. It was not possible to keep linking order for both sparc and sparc64 and as sparc64 see more testing than sparc it was natural to break linking order on sparc64. Should it have any effect it would be detected sooner this way. printf_32.c and printf_64.c are obvious candidates to be merged but they are not 100% equal so that was left for later Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/prom/bootstr_64.c')
-rw-r--r--arch/sparc/prom/bootstr_64.c40
1 files changed, 40 insertions, 0 deletions
diff --git a/arch/sparc/prom/bootstr_64.c b/arch/sparc/prom/bootstr_64.c
new file mode 100644
index 000000000000..ab9ccc63b388
--- /dev/null
+++ b/arch/sparc/prom/bootstr_64.c
@@ -0,0 +1,40 @@
+/*
+ * bootstr.c: Boot string/argument acquisition from the PROM.
+ *
+ * Copyright(C) 1995 David S. Miller (davem@caip.rutgers.edu)
+ * Copyright(C) 1996,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
+ */
+
+#include <linux/string.h>
+#include <linux/init.h>
+#include <asm/oplib.h>
+
+/* WARNING: The boot loader knows that these next three variables come one right
+ * after another in the .data section. Do not move this stuff into
+ * the .bss section or it will break things.
+ */
+
+#define BARG_LEN 256
+struct {
+ int bootstr_len;
+ int bootstr_valid;
+ char bootstr_buf[BARG_LEN];
+} bootstr_info = {
+ .bootstr_len = BARG_LEN,
+#ifdef CONFIG_CMDLINE
+ .bootstr_valid = 1,
+ .bootstr_buf = CONFIG_CMDLINE,
+#endif
+};
+
+char * __init
+prom_getbootargs(void)
+{
+ /* This check saves us from a panic when bootfd patches args. */
+ if (bootstr_info.bootstr_valid)
+ return bootstr_info.bootstr_buf;
+ prom_getstring(prom_chosen_node, "bootargs",
+ bootstr_info.bootstr_buf, BARG_LEN);
+ bootstr_info.bootstr_valid = 1;
+ return bootstr_info.bootstr_buf;
+}