From cf6cc014270549684873a5972d2595052c468cb6 Mon Sep 17 00:00:00 2001 From: Kumar Gala Date: Mon, 28 Apr 2008 02:24:04 -0500 Subject: 85xx: Additional fixes and cleanup of MP code * adjust __spin_table alignment to match ePAPR v0.94 spec * loop over all cpus when determing who is up. This fixes an issue if the "boot cpu" isn't core0. The "boot cpu" will already be in the cpu_up_mask so there is no harm * Added some protection in the code to ensure proper behavior. These changes are explicitly needed but don't hurt: - Added eieio to ensure the "hot word" of the table is written after all other table updates have occurred. - Added isync to ensure we don't prefetch loading of table entries until we a released These issues we raised by Dave Liu. Signed-off-by: Kumar Gala --- cpu/mpc85xx/release.S | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'cpu/mpc85xx/release.S') diff --git a/cpu/mpc85xx/release.S b/cpu/mpc85xx/release.S index 3b7366f..a47edae 100644 --- a/cpu/mpc85xx/release.S +++ b/cpu/mpc85xx/release.S @@ -114,6 +114,7 @@ __secondary_start_page: lwz r4,ENTRY_ADDR_LOWER(r10) andi. r11,r4,1 bne 2b + isync /* get the upper bits of the addr */ lwz r11,ENTRY_ADDR_UPPER(r10) @@ -169,7 +170,7 @@ __secondary_start_page: mtspr SPRN_SRR1,r13 rfi - .align 3 + .align L1_CACHE_SHIFT .globl __spin_table __spin_table: .space CONFIG_NR_CPUS*ENTRY_SIZE -- cgit v1.1