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authorKumar Gala <galak@kernel.crashing.org>2009-09-17 01:44:39 -0500
committerKumar Gala <galak@kernel.crashing.org>2009-09-24 12:05:28 -0500
commit39a7e7fd538cdf49e7e8a2f0634ea5e15e12b4ec (patch)
tree1e3500019d9f6b6e490061b230326a5d6ffe4f13
parenta880cf3e0e1c220d780eccd0b101170c4499485d (diff)
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ppc/p4080: CoreNet platfrom style secondary core release
The CoreNet platform style of bringing secondary cores out of reset is a bit different that the PQ3 style. Mostly the registers that we use to setup boot translation, enable time bases, and boot release the cores have moved around. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
-rw-r--r--cpu/mpc85xx/mp.c68
1 files changed, 65 insertions, 3 deletions
diff --git a/cpu/mpc85xx/mp.c b/cpu/mpc85xx/mp.c
index fa65bed..b5c6020 100644
--- a/cpu/mpc85xx/mp.c
+++ b/cpu/mpc85xx/mp.c
@@ -26,6 +26,7 @@
#include <lmb.h>
#include <asm/io.h>
#include <asm/mmu.h>
+#include <asm/fsl_law.h>
#include "mp.h"
DECLARE_GLOBAL_DATA_PTR;
@@ -135,7 +136,67 @@ ulong get_spin_addr(void)
return addr;
}
-static void pq3_mp_up(unsigned long bootpg)
+#ifdef CONFIG_FSL_CORENET
+static void plat_mp_up(unsigned long bootpg)
+{
+ u32 up, cpu_up_mask, whoami;
+ u32 *table = (u32 *)get_spin_addr();
+ volatile ccsr_gur_t *gur;
+ volatile ccsr_local_t *ccm;
+ volatile ccsr_rcpm_t *rcpm;
+ volatile ccsr_pic_t *pic;
+ int timeout = 10;
+ u32 nr_cpus;
+ struct law_entry e;
+
+ gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
+ ccm = (void *)(CONFIG_SYS_FSL_CORENET_CCM_ADDR);
+ rcpm = (void *)(CONFIG_SYS_FSL_CORENET_RCPM_ADDR);
+ pic = (void *)(CONFIG_SYS_MPC85xx_PIC_ADDR);
+
+ nr_cpus = ((in_be32(&pic->frr) >> 8) & 0xff) + 1;
+
+ whoami = in_be32(&pic->whoami);
+ cpu_up_mask = 1 << whoami;
+ out_be32(&ccm->bstrl, bootpg);
+
+ e = find_law(bootpg);
+ out_be32(&ccm->bstrar, LAW_EN | e.trgt_id << 20 | LAW_SIZE_4K);
+
+ /* disable time base at the platform */
+ out_be32(&rcpm->ctbenrl, cpu_up_mask);
+
+ /* release the hounds */
+ up = ((1 << nr_cpus) - 1);
+ out_be32(&gur->brrl, up);
+
+ /* wait for everyone */
+ while (timeout) {
+ int i;
+ for (i = 0; i < nr_cpus; i++) {
+ if (table[i * NUM_BOOT_ENTRY + BOOT_ENTRY_ADDR_LOWER])
+ cpu_up_mask |= (1 << i);
+ };
+
+ if ((cpu_up_mask & up) == up)
+ break;
+
+ udelay(100);
+ timeout--;
+ }
+
+ if (timeout == 0)
+ printf("CPU up timeout. CPU up mask is %x should be %x\n",
+ cpu_up_mask, up);
+
+ /* enable time base at the platform */
+ out_be32(&rcpm->ctbenrl, 0);
+ mtspr(SPRN_TBWU, 0);
+ mtspr(SPRN_TBWL, 0);
+ out_be32(&rcpm->ctbenrl, (1 << nr_cpus) - 1);
+}
+#else
+static void plat_mp_up(unsigned long bootpg)
{
u32 up, cpu_up_mask, whoami;
u32 *table = (u32 *)get_spin_addr();
@@ -196,6 +257,7 @@ static void pq3_mp_up(unsigned long bootpg)
devdisr &= ~(MPC85xx_DEVDISR_TB0 | MPC85xx_DEVDISR_TB1);
out_be32(&gur->devdisr, devdisr);
}
+#endif
void cpu_mp_lmb_reserve(struct lmb *lmb)
{
@@ -217,7 +279,7 @@ void setup_mp(void)
if (i != -1) {
/* map reset page to bootpg so we can copy code there */
disable_tlb(i);
-
+
set_tlb(1, 0xfffff000, bootpg, /* tlb, epn, rpn */
MAS3_SX|MAS3_SW|MAS3_SR, MAS2_M, /* perms, wimge */
0, i, BOOKE_PAGESZ_4K, 1); /* ts, esel, tsize, iprot */
@@ -234,7 +296,7 @@ void setup_mp(void)
MAS3_SX|MAS3_SW|MAS3_SR, MAS2_I, /* perms, wimge */
0, i, BOOKE_PAGESZ_4K, 1); /* ts, esel, tsize, iprot */
- pq3_mp_up(bootpg);
+ plat_mp_up(bootpg);
} else {
puts("WARNING: No reset page TLB. "
"Skipping secondary core setup\n");