85xx: Update multicore boot mechanism to ePAPR v0.81 spec
The following changes are needed to be inline with ePAPR v0.81:
* r4, r5 and now always set to 0 on boot release
* r7 is used to pass the size of the initial map area (IMA)
* EPAPR_MAGIC value changed for book-e processors
* changes in the spin table layout
* spin table supports a 64-bit physical release address
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/common/cmd_mp.c b/common/cmd_mp.c
index d96e6a3..26a57c5 100644
--- a/common/cmd_mp.c
+++ b/common/cmd_mp.c
@@ -26,7 +26,7 @@
int
cpu_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
- unsigned long cpuid, val = 0;
+ unsigned long cpuid;
if (argc < 3) {
printf ("Usage:\n%s\n", cmdtp->usage);
@@ -59,9 +59,7 @@
return 1;
}
- val = simple_strtoul(argv[3], NULL, 16);
-
- if (cpu_release(cpuid, val, argc - 4, argv + 4)) {
+ if (cpu_release(cpuid, argc - 3, argv + 3)) {
printf ("Usage:\n%s\n", cmdtp->usage);
return 1;
}
@@ -71,17 +69,16 @@
#ifdef CONFIG_PPC
#define CPU_ARCH_HELP \
- " [args] : <pir> <r3> <r4> <r6> <r7>\n" \
+ " [args] : <pir> <r3> <r6>\n" \
" pir - processor id (if writeable)\n" \
" r3 - value for gpr 3\n" \
- " r4 - value for gpr 4\n" \
" r6 - value for gpr 6\n" \
- " r7 - value for gpr 7\n" \
"\n" \
" Use '-' for any arg if you want the default value.\n" \
- " Default for r3, r4, r7 is 0, r6 is 0x65504150\n" \
+ " Default for r3 is <num> and r6 is 0\n" \
"\n" \
- " When cpu <num> is released r5 = 0 per the ePAPR spec.\n"
+ " When cpu <num> is released r4 and r5 = 0.\n" \
+ " r7 will contain the size of the initial mapped area\n"
#endif
U_BOOT_CMD(
