powerpc/mpc85xx: Rewrite spin table to comply with ePAPR v1.1
Move spin table to cached memory to comply with ePAPR v1.1.
Load R3 with 64-bit value if CONFIG_SYS_PPC64 is defined.
'M' bit is set for DDR TLB to maintain cache coherence.
See details in doc/README.mpc85xx-spin-table.
Signed-off-by: York Sun <yorksun@freescale.com>
Signed-off-by: Andy Fleming <afleming@freescale.com>
diff --git a/arch/powerpc/cpu/mpc85xx/fdt.c b/arch/powerpc/cpu/mpc85xx/fdt.c
index 8221481..a364ef2 100644
--- a/arch/powerpc/cpu/mpc85xx/fdt.c
+++ b/arch/powerpc/cpu/mpc85xx/fdt.c
@@ -47,7 +47,7 @@
void ft_fixup_cpu(void *blob, u64 memory_limit)
{
int off;
- ulong spin_tbl_addr = get_spin_phys_addr();
+ phys_addr_t spin_tbl_addr = get_spin_phys_addr();
u32 bootpg = determine_mp_bootpg(NULL);
u32 id = get_my_id();
const char *enable_method;
@@ -97,7 +97,16 @@
if ((u64)bootpg < memory_limit) {
off = fdt_add_mem_rsv(blob, bootpg, (u64)4096);
if (off < 0)
- printf("%s: %s\n", __FUNCTION__, fdt_strerror(off));
+ printf("Failed to reserve memory for bootpg: %s\n",
+ fdt_strerror(off));
+ }
+ /* Reserve spin table page */
+ if (spin_tbl_addr < memory_limit) {
+ off = fdt_add_mem_rsv(blob,
+ (spin_tbl_addr & ~0xffful), 4096);
+ if (off < 0)
+ printf("Failed to reserve memory for spin table: %s\n",
+ fdt_strerror(off));
}
}
#endif