aboutsummaryrefslogtreecommitdiff
path: root/arch/powerpc/kernel/prom.c
diff options
context:
space:
mode:
authorMichael Ellerman <michael@ellerman.id.au>2006-06-23 18:20:13 +1000
committerPaul Mackerras <paulus@samba.org>2006-06-28 11:59:48 +1000
commit458148c00b97864a27ecf528a1d45a8e5ebd9bbc (patch)
treecd32ceb1cddc32e501a1aeebd0f0f88dbdd950a5 /arch/powerpc/kernel/prom.c
parentab3ab74d9b6b3920be70f502b40cb3f7f08d23fa (diff)
[POWERPC] Setup RTAS values earlier, to enable rtas_call() earlier
Althought RTAS is instantiated when we enter the kernel, we can't actually call into it until we know its entry point address. Currently we grab that in rtas_initialize(), however that's quite late in the boot sequence. To enable rtas_call() earlier, we can grab the RTAS entry etc. values while we're scanning the flattened device tree. There's existing code to retrieve the values from /chosen, however we don't store them there anymore, so remove that code. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/kernel/prom.c')
-rw-r--r--arch/powerpc/kernel/prom.c23
1 files changed, 5 insertions, 18 deletions
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index efed4bc2b45..ce02c056ac3 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -1125,24 +1125,6 @@ static int __init early_init_dt_scan_chosen(unsigned long node,
tce_alloc_end = *lprop;
#endif
-#ifdef CONFIG_PPC_RTAS
- /* To help early debugging via the front panel, we retrieve a minimal
- * set of RTAS infos now if available
- */
- {
- u64 *basep, *entryp, *sizep;
-
- basep = of_get_flat_dt_prop(node, "linux,rtas-base", NULL);
- entryp = of_get_flat_dt_prop(node, "linux,rtas-entry", NULL);
- sizep = of_get_flat_dt_prop(node, "linux,rtas-size", NULL);
- if (basep && entryp && sizep) {
- rtas.base = *basep;
- rtas.entry = *entryp;
- rtas.size = *sizep;
- }
- }
-#endif /* CONFIG_PPC_RTAS */
-
#ifdef CONFIG_KEXEC
lprop = (u64*)of_get_flat_dt_prop(node, "linux,crashkernel-base", NULL);
if (lprop)
@@ -1327,6 +1309,11 @@ void __init early_init_devtree(void *params)
/* Setup flat device-tree pointer */
initial_boot_params = params;
+#ifdef CONFIG_PPC_RTAS
+ /* Some machines might need RTAS info for debugging, grab it now. */
+ of_scan_flat_dt(early_init_dt_scan_rtas, NULL);
+#endif
+
/* Retrieve various informations from the /chosen node of the
* device-tree, including the platform type, initrd location and
* size, TCE reserve, and more ...