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-rw-r--r--arch/powerpc/kernel/prom.c21
1 files changed, 19 insertions, 2 deletions
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 174e1e96175e..fa1235b0503b 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -27,7 +27,7 @@
#include <linux/delay.h>
#include <linux/initrd.h>
#include <linux/bitops.h>
-#include <linux/module.h>
+#include <linux/export.h>
#include <linux/kexec.h>
#include <linux/debugfs.h>
#include <linux/irq.h>
@@ -54,6 +54,8 @@
#include <asm/pci-bridge.h>
#include <asm/phyp_dump.h>
#include <asm/kexec.h>
+#include <asm/opal.h>
+
#include <mm/mmu_decl.h>
#ifdef DEBUG
@@ -707,11 +709,23 @@ void __init early_init_devtree(void *params)
of_scan_flat_dt(early_init_dt_scan_rtas, NULL);
#endif
+#ifdef CONFIG_PPC_POWERNV
+ /* Some machines might need OPAL info for debugging, grab it now. */
+ of_scan_flat_dt(early_init_dt_scan_opal, NULL);
+#endif
+
#ifdef CONFIG_PHYP_DUMP
/* scan tree to see if dump occurred during last boot */
of_scan_flat_dt(early_init_dt_scan_phyp_dump, NULL);
#endif
+ /* Pre-initialize the cmd_line with the content of boot_commmand_line,
+ * which will be empty except when the content of the variable has
+ * been overriden by a bootloading mechanism. This happens typically
+ * with HAL takeover
+ */
+ strlcpy(cmd_line, boot_command_line, COMMAND_LINE_SIZE);
+
/* Retrieve various informations from the /chosen node of the
* device-tree, including the platform type, initrd location and
* size, TCE reserve, and more ...
@@ -723,12 +737,15 @@ void __init early_init_devtree(void *params)
of_scan_flat_dt(early_init_dt_scan_root, NULL);
of_scan_flat_dt(early_init_dt_scan_memory_ppc, NULL);
- setup_initial_memory_limit(memstart_addr, first_memblock_size);
/* Save command line for /proc/cmdline and then parse parameters */
strlcpy(boot_command_line, cmd_line, COMMAND_LINE_SIZE);
parse_early_param();
+ /* make sure we've parsed cmdline for mem= before this */
+ if (memory_limit)
+ first_memblock_size = min(first_memblock_size, memory_limit);
+ setup_initial_memory_limit(memstart_addr, first_memblock_size);
/* Reserve MEMBLOCK regions used by kernel, initrd, dt, etc... */
memblock_reserve(PHYSICAL_START, __pa(klimit) - PHYSICAL_START);
/* If relocatable, reserve first 32k for interrupt vectors etc. */