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Diffstat (limited to 'arch/powerpc/cpu/mpc85xx/release.S')
-rw-r--r--arch/powerpc/cpu/mpc85xx/release.S219
1 files changed, 124 insertions, 95 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/release.S b/arch/powerpc/cpu/mpc85xx/release.S
index 22e73e066..4ba44a902 100644
--- a/arch/powerpc/cpu/mpc85xx/release.S
+++ b/arch/powerpc/cpu/mpc85xx/release.S
@@ -150,29 +150,33 @@ __secondary_start_page:
#define toreset(x) (x - __secondary_start_page + 0xfffff000)
/* get our PIR to figure out our table entry */
- lis r3,toreset(__spin_table)@h
- ori r3,r3,toreset(__spin_table)@l
+ lis r3,toreset(__spin_table_addr)@h
+ ori r3,r3,toreset(__spin_table_addr)@l
+ lwz r3,0(r3)
- /* r10 has the base address for the entry */
+ /*
+ * r10 has the base address for the entry.
+ * we cannot access it yet before setting up a new TLB
+ */
mfspr r0,SPRN_PIR
#if defined(CONFIG_E6500)
/*
* PIR definition for E6500
* 0-17 Reserved (logic 0s)
- * 8-19 CHIP_ID, 2’b00 - SoC 1
+ * 8-19 CHIP_ID, 2'b00 - SoC 1
* all others - reserved
- * 20-24 CLUSTER_ID 5’b00000 - CCM 1
+ * 20-24 CLUSTER_ID 5'b00000 - CCM 1
* all others - reserved
- * 25-26 CORE_CLUSTER_ID 2’b00 - cluster 1
- * 2’b01 - cluster 2
- * 2’b10 - cluster 3
- * 2’b11 - cluster 4
- * 27-28 CORE_ID 2’b00 - core 0
- * 2’b01 - core 1
- * 2’b10 - core 2
- * 2’b11 - core 3
- * 29-31 THREAD_ID 3’b000 - thread 0
- * 3’b001 - thread 1
+ * 25-26 CORE_CLUSTER_ID 2'b00 - cluster 1
+ * 2'b01 - cluster 2
+ * 2'b10 - cluster 3
+ * 2'b11 - cluster 4
+ * 27-28 CORE_ID 2'b00 - core 0
+ * 2'b01 - core 1
+ * 2'b10 - core 2
+ * 2'b11 - core 3
+ * 29-31 THREAD_ID 3'b000 - thread 0
+ * 3'b001 - thread 1
*/
rlwinm r4,r0,29,25,31
#elif defined(CONFIG_E500MC)
@@ -180,16 +184,9 @@ __secondary_start_page:
#else
mr r4,r0
#endif
- slwi r8,r4,5
+ slwi r8,r4,6 /* spin table is padded to 64 byte */
add r10,r3,r8
-#if defined(CONFIG_E500MC) && defined(CONFIG_SYS_CACHE_STASHING)
- /* set stash id to (coreID) * 2 + 32 + L1 CT (0) */
- slwi r8,r4,1
- addi r8,r8,32
- mtspr L1CSR2,r8
-#endif
-
#ifdef CONFIG_E6500
mfspr r0,SPRN_PIR
/*
@@ -209,6 +206,13 @@ __secondary_start_page:
mtspr SPRN_PIR,r4 /* write to PIR register */
+#ifdef CONFIG_SYS_CACHE_STASHING
+ /* set stash id to (coreID) * 2 + 32 + L1 CT (0) */
+ slwi r8,r4,1
+ addi r8,r8,32
+ mtspr L1CSR2,r8
+#endif
+
#if defined(CONFIG_SYS_P4080_ERRATUM_CPU22) || \
defined(CONFIG_SYS_FSL_ERRATUM_NMG_CPU_A011)
/*
@@ -277,73 +281,111 @@ __secondary_start_page:
beq 2b
#endif
3:
-
-#define EPAPR_MAGIC (0x45504150)
-#define ENTRY_ADDR_UPPER 0
-#define ENTRY_ADDR_LOWER 4
-#define ENTRY_R3_UPPER 8
-#define ENTRY_R3_LOWER 12
-#define ENTRY_RESV 16
-#define ENTRY_PIR 20
-#define ENTRY_R6_UPPER 24
-#define ENTRY_R6_LOWER 28
-#define ENTRY_SIZE 32
-
- /* setup the entry */
- li r3,0
- li r8,1
- stw r4,ENTRY_PIR(r10)
- stw r3,ENTRY_ADDR_UPPER(r10)
- stw r8,ENTRY_ADDR_LOWER(r10)
- stw r3,ENTRY_R3_UPPER(r10)
- stw r4,ENTRY_R3_LOWER(r10)
- stw r3,ENTRY_R6_UPPER(r10)
- stw r3,ENTRY_R6_LOWER(r10)
-
- /* load r13 with the address of the 'bootpg' in SDRAM */
- lis r13,toreset(__bootpg_addr)@h
- ori r13,r13,toreset(__bootpg_addr)@l
+ /* setup mapping for the spin table, WIMGE=0b00100 */
+ lis r13,toreset(__spin_table_addr)@h
+ ori r13,r13,toreset(__spin_table_addr)@l
lwz r13,0(r13)
+ /* mask by 4K */
+ rlwinm r13,r13,0,0,19
- /* setup mapping for AS = 1, and jump there */
lis r11,(MAS0_TLBSEL(1)|MAS0_ESEL(1))@h
mtspr SPRN_MAS0,r11
lis r11,(MAS1_VALID|MAS1_IPROT)@h
ori r11,r11,(MAS1_TS|MAS1_TSIZE(BOOKE_PAGESZ_4K))@l
mtspr SPRN_MAS1,r11
- oris r11,r13,(MAS2_I|MAS2_G)@h
- ori r11,r13,(MAS2_I|MAS2_G)@l
+ oris r11,r13,(MAS2_M|MAS2_G)@h
+ ori r11,r13,(MAS2_M|MAS2_G)@l
mtspr SPRN_MAS2,r11
oris r11,r13,(MAS3_SX|MAS3_SW|MAS3_SR)@h
ori r11,r13,(MAS3_SX|MAS3_SW|MAS3_SR)@l
mtspr SPRN_MAS3,r11
+ li r11,0
+ mtspr SPRN_MAS7,r11
tlbwe
- bl 1f
-1: mflr r11
/*
- * OR in 0xfff to create a mask of the bootpg SDRAM address. We use
- * this mask to fixup the cpu spin table and the address that we want
- * to jump to, eg change them from 0xfffffxxx to 0x7ffffxxx if the
- * bootpg is at 0x7ffff000 in SDRAM.
+ * __bootpg_addr has the address of __second_half_boot_page
+ * jump there in AS=1 space with cache enabled
*/
- ori r13,r13,0xfff
- and r11, r11, r13
- and r10, r10, r13
-
- addi r11,r11,(2f-1b)
+ lis r13,toreset(__bootpg_addr)@h
+ ori r13,r13,toreset(__bootpg_addr)@l
+ lwz r11,0(r13)
+ mtspr SPRN_SRR0,r11
mfmsr r13
ori r12,r13,MSR_IS|MSR_DS@l
-
- mtspr SPRN_SRR0,r11
mtspr SPRN_SRR1,r12
rfi
+ /*
+ * Allocate some space for the SDRAM address of the bootpg.
+ * This variable has to be in the boot page so that it can
+ * be accessed by secondary cores when they come out of reset.
+ */
+ .align L1_CACHE_SHIFT
+ .globl __bootpg_addr
+__bootpg_addr:
+ .long 0
+
+ .global __spin_table_addr
+__spin_table_addr:
+ .long 0
+
+ /*
+ * This variable is set by cpu_init_r() after parsing hwconfig
+ * to enable workaround for erratum NMG_CPU_A011.
+ */
+ .align L1_CACHE_SHIFT
+ .global enable_cpu_a011_workaround
+enable_cpu_a011_workaround:
+ .long 1
+
+ /* Fill in the empty space. The actual reset vector is
+ * the last word of the page */
+__secondary_start_code_end:
+ .space 4092 - (__secondary_start_code_end - __secondary_start_page)
+__secondary_reset_vector:
+ b __secondary_start_page
+
+
+/* this is a separated page for the spin table and cacheable boot code */
+ .align L1_CACHE_SHIFT
+ .global __second_half_boot_page
+__second_half_boot_page:
+#define EPAPR_MAGIC 0x45504150
+#define ENTRY_ADDR_UPPER 0
+#define ENTRY_ADDR_LOWER 4
+#define ENTRY_R3_UPPER 8
+#define ENTRY_R3_LOWER 12
+#define ENTRY_RESV 16
+#define ENTRY_PIR 20
+#define ENTRY_SIZE 64
+ /*
+ * setup the entry
+ * r10 has the base address of the spin table.
+ * spin table is defined as
+ * struct {
+ * uint64_t entry_addr;
+ * uint64_t r3;
+ * uint32_t rsvd1;
+ * uint32_t pir;
+ * };
+ * we pad this struct to 64 bytes so each entry is in its own cacheline
+ */
+ li r3,0
+ li r8,1
+ mfspr r4,SPRN_PIR
+ stw r3,ENTRY_ADDR_UPPER(r10)
+ stw r3,ENTRY_R3_UPPER(r10)
+ stw r4,ENTRY_R3_LOWER(r10)
+ stw r3,ENTRY_RESV(r10)
+ stw r4,ENTRY_PIR(r10)
+ msync
+ stw r8,ENTRY_ADDR_LOWER(r10)
+
/* spin waiting for addr */
-2:
- lwz r4,ENTRY_ADDR_LOWER(r10)
+3: lwz r4,ENTRY_ADDR_LOWER(r10)
andi. r11,r4,1
- bne 2b
+ bne 3b
isync
/* setup IVORs to match fixed offsets */
@@ -362,11 +404,20 @@ __secondary_start_page:
/* mask by ~64M to setup our tlb we will jump to */
rlwinm r12,r4,0,0,5
- /* setup r3, r4, r5, r6, r7, r8, r9 */
+ /*
+ * setup r3, r4, r5, r6, r7, r8, r9
+ * r3 contains the value to put in the r3 register at secondary cpu
+ * entry. The high 32-bits are ignored on 32-bit chip implementations.
+ * 64-bit chip implementations however shall load all 64-bits
+ */
+#ifdef CONFIG_SYS_PPC64
+ ld r3,ENTRY_R3_UPPER(r10)
+#else
lwz r3,ENTRY_R3_LOWER(r10)
+#endif
li r4,0
li r5,0
- lwz r6,ENTRY_R6_LOWER(r10)
+ li r6,0
lis r7,(64*1024*1024)@h
li r8,0
li r9,0
@@ -404,32 +455,10 @@ __secondary_start_page:
mtspr SPRN_SRR1,r13
rfi
- /*
- * Allocate some space for the SDRAM address of the bootpg.
- * This variable has to be in the boot page so that it can
- * be accessed by secondary cores when they come out of reset.
- */
- .globl __bootpg_addr
-__bootpg_addr:
- .long 0
- .align L1_CACHE_SHIFT
+ .align 6
.globl __spin_table
__spin_table:
.space CONFIG_MAX_CPUS*ENTRY_SIZE
-
- /*
- * This variable is set by cpu_init_r() after parsing hwconfig
- * to enable workaround for erratum NMG_CPU_A011.
- */
- .align L1_CACHE_SHIFT
- .global enable_cpu_a011_workaround
-enable_cpu_a011_workaround:
- .long 1
-
- /* Fill in the empty space. The actual reset vector is
- * the last word of the page */
-__secondary_start_code_end:
- .space 4092 - (__secondary_start_code_end - __secondary_start_page)
-__secondary_reset_vector:
- b __secondary_start_page
+__spin_table_end:
+ .space 4096 - (__spin_table_end - __spin_table)