Added arch_lmb_reserve to allow arch specific memory regions protection
Each architecture has different ways of determine what regions of memory
might not be valid to get overwritten when we boot. This provides a
hook to allow them to reserve any regions they care about. Currently
only ppc, m68k and sparc need/use this.
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/lib_ppc/bootm.c b/lib_ppc/bootm.c
index d498818..1f3501a 100644
--- a/lib_ppc/bootm.c
+++ b/lib_ppc/bootm.c
@@ -55,30 +55,10 @@
#define CONFIG_SYS_LINUX_LOWMEM_MAX_SIZE (768*1024*1024)
#endif
-__attribute__((noinline))
-int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images)
+void arch_lmb_reserve(struct lmb *lmb)
{
- ulong sp;
-
- ulong initrd_start, initrd_end;
- ulong rd_len;
- ulong size;
phys_size_t bootm_size;
-
- ulong cmd_start, cmd_end, bootmap_base;
- bd_t *kbd;
- void (*kernel)(bd_t *, ulong r4, ulong r5, ulong r6,
- ulong r7, ulong r8, ulong r9);
- int ret;
- ulong of_size = images->ft_len;
- struct lmb *lmb = &images->lmb;
-
-#if defined(CONFIG_OF_LIBFDT)
- char *of_flat_tree = images->ft_addr;
-#endif
-
- kernel = (void (*)(bd_t *, ulong, ulong, ulong,
- ulong, ulong, ulong))images->ep;
+ ulong size, sp, bootmap_base;
bootmap_base = getenv_bootm_low();
bootm_size = getenv_bootm_size();
@@ -116,6 +96,32 @@
sp -= 1024;
lmb_reserve(lmb, sp, (CONFIG_SYS_SDRAM_BASE + get_effective_memsize() - sp));
+ return ;
+}
+
+__attribute__((noinline))
+int do_bootm_linux(int flag, int argc, char *argv[], bootm_headers_t *images)
+{
+ ulong initrd_start, initrd_end;
+ ulong rd_len;
+
+ ulong cmd_start, cmd_end, bootmap_base;
+ bd_t *kbd;
+ void (*kernel)(bd_t *, ulong r4, ulong r5, ulong r6,
+ ulong r7, ulong r8, ulong r9);
+ int ret;
+ ulong of_size = images->ft_len;
+ struct lmb *lmb = &images->lmb;
+
+#if defined(CONFIG_OF_LIBFDT)
+ char *of_flat_tree = images->ft_addr;
+#endif
+
+ kernel = (void (*)(bd_t *, ulong, ulong, ulong,
+ ulong, ulong, ulong))images->ep;
+
+ bootmap_base = getenv_bootm_low();
+
if (!of_size) {
/* allocate space and init command line */
ret = boot_get_cmdline (lmb, &cmd_start, &cmd_end, bootmap_base);