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-rw-r--r--arch/powerpc/cpu/mpc85xx/cmd_errata.c3
-rw-r--r--arch/powerpc/cpu/mpc85xx/release.S27
-rw-r--r--arch/powerpc/cpu/mpc85xx/start.S284
-rw-r--r--arch/powerpc/include/asm/config_mpc85xx.h14
-rw-r--r--arch/powerpc/include/asm/processor.h2
5 files changed, 330 insertions, 0 deletions
diff --git a/arch/powerpc/cpu/mpc85xx/cmd_errata.c b/arch/powerpc/cpu/mpc85xx/cmd_errata.c
index 858b3f8..e8989bd 100644
--- a/arch/powerpc/cpu/mpc85xx/cmd_errata.c
+++ b/arch/powerpc/cpu/mpc85xx/cmd_errata.c
@@ -124,6 +124,9 @@ static int do_errata(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
if ((SVR_MAJ(svr) == 1) || IS_SVR_REV(svr, 2, 0))
puts("Work-around for Erratum NMG ETSEC129 enabled\n");
#endif
+#ifdef CONFIG_SYS_FSL_ERRATUM_A004510
+ puts("Work-around for Erratum A004510 enabled\n");
+#endif
return 0;
}
diff --git a/arch/powerpc/cpu/mpc85xx/release.S b/arch/powerpc/cpu/mpc85xx/release.S
index 1555a9b..043d0ff 100644
--- a/arch/powerpc/cpu/mpc85xx/release.S
+++ b/arch/powerpc/cpu/mpc85xx/release.S
@@ -74,6 +74,33 @@ __secondary_start_page:
mtspr 977,r3
#endif
+#ifdef CONFIG_SYS_FSL_ERRATUM_A004510
+ mfspr r3,SPRN_SVR
+ rlwinm r3,r3,0,0xff
+ li r4,CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV
+ cmpw r3,r4
+ beq 1f
+
+#ifdef CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV2
+ li r4,CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV2
+ cmpw r3,r4
+ beq 1f
+#endif
+
+ /* Not a supported revision affected by erratum */
+ b 2f
+
+1: /* Erratum says set bits 55:60 to 001001 */
+ msync
+ isync
+ mfspr r3,976
+ li r4,0x48
+ rlwimi r3,r4,0,0x1f8
+ mtspr 976,r3
+ isync
+2:
+#endif
+
/* Enable branch prediction */
lis r3,BUCSR_ENABLE@h
ori r3,r3,BUCSR_ENABLE@l
diff --git a/arch/powerpc/cpu/mpc85xx/start.S b/arch/powerpc/cpu/mpc85xx/start.S
index b1998b2..66e8eb8 100644
--- a/arch/powerpc/cpu/mpc85xx/start.S
+++ b/arch/powerpc/cpu/mpc85xx/start.S
@@ -86,6 +86,35 @@ _start_e500:
li r1,MSR_DE
mtmsr r1
+#ifdef CONFIG_SYS_FSL_ERRATUM_A004510
+ mfspr r3,SPRN_SVR
+ rlwinm r3,r3,0,0xff
+ li r4,CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV
+ cmpw r3,r4
+ beq 1f
+
+#ifdef CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV2
+ li r4,CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV2
+ cmpw r3,r4
+ beq 1f
+#endif
+
+ /* Not a supported revision affected by erratum */
+ li r27,0
+ b 2f
+
+1: li r27,1 /* Remember for later that we have the erratum */
+ /* Erratum says set bits 55:60 to 001001 */
+ msync
+ isync
+ mfspr r3,976
+ li r4,0x48
+ rlwimi r3,r4,0,0x1f8
+ mtspr 976,r3
+ isync
+2:
+#endif
+
#if defined(CONFIG_SECURE_BOOT) && defined(CONFIG_E500MC)
/* ISBC uses L2 as stack.
* Disable L2 cache here so that u-boot can enable it later
@@ -440,6 +469,14 @@ nexti: mflr r1 /* R1 = our PC */
mfspr r2, MAS2
andc r2, r2, r3
or r2, r2, r1
+#ifdef CONFIG_SYS_FSL_ERRATUM_A004510
+ cmpwi r27,0
+ beq 1f
+ andi. r15, r2, MAS2_I|MAS2_G /* save the old I/G for later */
+ rlwinm r2, r2, 0, ~MAS2_I
+ ori r2, r2, MAS2_G
+1:
+#endif
mtspr MAS2, r2 /* Set the EPN to our PC base address */
mfspr r2, MAS3
@@ -719,6 +756,253 @@ delete_temp_tlbs:
tlbwe
#endif /* #if (CONFIG_SYS_CCSRBAR_DEFAULT != CONFIG_SYS_CCSRBAR_PHYS) */
+#ifdef CONFIG_SYS_FSL_ERRATUM_A004510
+#define DCSR_LAWBARH0 (CONFIG_SYS_CCSRBAR + 0x1000)
+#define LAW_SIZE_1M 0x13
+#define DCSRBAR_LAWAR (LAW_EN | (0x1d << 20) | LAW_SIZE_1M)
+
+ cmpwi r27,0
+ beq 9f
+
+ /*
+ * Create a TLB entry for CCSR
+ *
+ * We're executing out of TLB1 entry in r14, and that's the only
+ * TLB entry that exists. To allocate some TLB entries for our
+ * own use, flip a bit high enough that we won't flip it again
+ * via incrementing.
+ */
+
+ xori r8, r14, 32
+ lis r0, MAS0_TLBSEL(1)@h
+ rlwimi r0, r8, 16, MAS0_ESEL_MSK
+ lis r1, FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_16M)@h
+ ori r1, r1, FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_16M)@l
+ lis r7, CONFIG_SYS_CCSRBAR@h
+ ori r7, r7, CONFIG_SYS_CCSRBAR@l
+ ori r2, r7, MAS2_I|MAS2_G
+ lis r3, FSL_BOOKE_MAS3(CONFIG_SYS_CCSRBAR_PHYS_LOW, 0, (MAS3_SW|MAS3_SR))@h
+ ori r3, r3, FSL_BOOKE_MAS3(CONFIG_SYS_CCSRBAR_PHYS_LOW, 0, (MAS3_SW|MAS3_SR))@l
+ lis r4, CONFIG_SYS_CCSRBAR_PHYS_HIGH@h
+ ori r4, r4, CONFIG_SYS_CCSRBAR_PHYS_HIGH@l
+ mtspr MAS0, r0
+ mtspr MAS1, r1
+ mtspr MAS2, r2
+ mtspr MAS3, r3
+ mtspr MAS7, r4
+ isync
+ tlbwe
+ isync
+ msync
+
+ /* Map DCSR temporarily to physical address zero */
+ li r0, 0
+ lis r3, DCSRBAR_LAWAR@h
+ ori r3, r3, DCSRBAR_LAWAR@l
+
+ stw r0, 0xc00(r7) /* LAWBARH0 */
+ stw r0, 0xc04(r7) /* LAWBARL0 */
+ sync
+ stw r3, 0xc08(r7) /* LAWAR0 */
+
+ /* Read back from LAWAR to ensure the update is complete. */
+ lwz r3, 0xc08(r7) /* LAWAR0 */
+ isync
+
+ /* Create a TLB entry for DCSR at zero */
+
+ addi r9, r8, 1
+ lis r0, MAS0_TLBSEL(1)@h
+ rlwimi r0, r9, 16, MAS0_ESEL_MSK
+ lis r1, FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_1M)@h
+ ori r1, r1, FSL_BOOKE_MAS1(1, 1, 0, 0, BOOKE_PAGESZ_1M)@l
+ li r6, 0 /* DCSR effective address */
+ ori r2, r6, MAS2_I|MAS2_G
+ li r3, MAS3_SW|MAS3_SR
+ li r4, 0
+ mtspr MAS0, r0
+ mtspr MAS1, r1
+ mtspr MAS2, r2
+ mtspr MAS3, r3
+ mtspr MAS7, r4
+ isync
+ tlbwe
+ isync
+ msync
+
+ /* enable the timebase */
+#define CTBENR 0xe2084
+ li r3, 1
+ addis r4, r7, CTBENR@ha
+ stw r3, CTBENR@l(r4)
+ lwz r3, CTBENR@l(r4)
+ twi 0,r3,0
+ isync
+
+ .macro erratum_set_ccsr offset value
+ addis r3, r7, \offset@ha
+ lis r4, \value@h
+ addi r3, r3, \offset@l
+ ori r4, r4, \value@l
+ bl erratum_set_value
+ .endm
+
+ .macro erratum_set_dcsr offset value
+ addis r3, r6, \offset@ha
+ lis r4, \value@h
+ addi r3, r3, \offset@l
+ ori r4, r4, \value@l
+ bl erratum_set_value
+ .endm
+
+ erratum_set_dcsr 0xb0e08 0xe0201800
+ erratum_set_dcsr 0xb0e18 0xe0201800
+ erratum_set_dcsr 0xb0e38 0xe0400000
+ erratum_set_dcsr 0xb0008 0x00900000
+ erratum_set_dcsr 0xb0e40 0xe00a0000
+ erratum_set_ccsr 0x18600 CONFIG_SYS_FSL_CORENET_SNOOPVEC_COREONLY
+ erratum_set_ccsr 0x10f00 0x415e5000
+ erratum_set_ccsr 0x11f00 0x415e5000
+
+ /* Make temp mapping uncacheable again, if it was initially */
+ bl 2f
+2: mflr r3
+ tlbsx 0, r3
+ mfspr r4, MAS2
+ rlwimi r4, r15, 0, MAS2_I
+ rlwimi r4, r15, 0, MAS2_G
+ mtspr MAS2, r4
+ isync
+ tlbwe
+ isync
+ msync
+
+ /* Clear the cache */
+ lis r3,(L1CSR1_ICFI|L1CSR1_ICLFR)@h
+ ori r3,r3,(L1CSR1_ICFI|L1CSR1_ICLFR)@l
+ sync
+ isync
+ mtspr SPRN_L1CSR1,r3
+ isync
+2: sync
+ mfspr r4,SPRN_L1CSR1
+ and. r4,r4,r3
+ bne 2b
+
+ lis r3,(L1CSR1_CPE|L1CSR1_ICE)@h
+ ori r3,r3,(L1CSR1_CPE|L1CSR1_ICE)@l
+ sync
+ isync
+ mtspr SPRN_L1CSR1,r3
+ isync
+2: sync
+ mfspr r4,SPRN_L1CSR1
+ and. r4,r4,r3
+ beq 2b
+
+ /* Remove temporary mappings */
+ lis r0, MAS0_TLBSEL(1)@h
+ rlwimi r0, r9, 16, MAS0_ESEL_MSK
+ li r3, 0
+ mtspr MAS0, r0
+ mtspr MAS1, r3
+ isync
+ tlbwe
+ isync
+ msync
+
+ li r3, 0
+ stw r3, 0xc08(r7) /* LAWAR0 */
+ lwz r3, 0xc08(r7)
+ isync
+
+ lis r0, MAS0_TLBSEL(1)@h
+ rlwimi r0, r8, 16, MAS0_ESEL_MSK
+ li r3, 0
+ mtspr MAS0, r0
+ mtspr MAS1, r3
+ isync
+ tlbwe
+ isync
+ msync
+
+ b 9f
+
+ /* r3 = addr, r4 = value, clobbers r5, r11, r12 */
+erratum_set_value:
+ /* Lock two cache lines into I-Cache */
+ sync
+ mfspr r11, SPRN_L1CSR1
+ rlwinm r11, r11, 0, ~L1CSR1_ICUL
+ sync
+ isync
+ mtspr SPRN_L1CSR1, r11
+ isync
+
+ mflr r12
+ bl 5f
+5: mflr r5
+ addi r5, r5, 2f - 5b
+ icbtls 0, 0, r5
+ addi r5, r5, 64
+
+ sync
+ mfspr r11, SPRN_L1CSR1
+3: andi. r11, r11, L1CSR1_ICUL
+ bne 3b
+
+ icbtls 0, 0, r5
+ addi r5, r5, 64
+
+ sync
+ mfspr r11, SPRN_L1CSR1
+3: andi. r11, r11, L1CSR1_ICUL
+ bne 3b
+
+ b 2f
+ .align 6
+ /* Inside a locked cacheline, wait a while, write, then wait a while */
+2: sync
+
+ mfspr r5, SPRN_TBRL
+ addis r11, r5, 0x10000@h /* wait 65536 timebase ticks */
+4: mfspr r5, SPRN_TBRL
+ subf. r5, r5, r11
+ bgt 4b
+
+ stw r4, 0(r3)
+
+ mfspr r5, SPRN_TBRL
+ addis r11, r5, 0x10000@h /* wait 65536 timebase ticks */
+4: mfspr r5, SPRN_TBRL
+ subf. r5, r5, r11
+ bgt 4b
+
+ sync
+
+ /*
+ * Fill out the rest of this cache line and the next with nops,
+ * to ensure that nothing outside the locked area will be
+ * fetched due to a branch.
+ */
+ .rept 19
+ nop
+ .endr
+
+ sync
+ mfspr r11, SPRN_L1CSR1
+ rlwinm r11, r11, 0, ~L1CSR1_ICUL
+ sync
+ isync
+ mtspr SPRN_L1CSR1, r11
+ isync
+
+ mtlr r12
+ blr
+
+9:
+#endif
+
create_init_ram_area:
lis r6,FSL_BOOKE_MAS0(1, 15, 0)@h
ori r6,r6,FSL_BOOKE_MAS0(1, 15, 0)@l
diff --git a/arch/powerpc/include/asm/config_mpc85xx.h b/arch/powerpc/include/asm/config_mpc85xx.h
index 950ec2f..8c7489d 100644
--- a/arch/powerpc/include/asm/config_mpc85xx.h
+++ b/arch/powerpc/include/asm/config_mpc85xx.h
@@ -330,6 +330,10 @@
#define CONFIG_SYS_FSL_SRIO_MAX_PORTS 2
#define CONFIG_SYS_FSL_SRIO_OB_WIN_NUM 9
#define CONFIG_SYS_FSL_SRIO_IB_WIN_NUM 5
+#define CONFIG_SYS_FSL_ERRATUM_A004510
+#define CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV 0x10
+#define CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV2 0x11
+#define CONFIG_SYS_FSL_CORENET_SNOOPVEC_COREONLY 0xf0000000
#elif defined(CONFIG_PPC_P3041)
#define CONFIG_MAX_CPUS 4
@@ -355,6 +359,10 @@
#define CONFIG_SYS_FSL_SRIO_MAX_PORTS 2
#define CONFIG_SYS_FSL_SRIO_OB_WIN_NUM 9
#define CONFIG_SYS_FSL_SRIO_IB_WIN_NUM 5
+#define CONFIG_SYS_FSL_ERRATUM_A004510
+#define CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV 0x10
+#define CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV2 0x11
+#define CONFIG_SYS_FSL_CORENET_SNOOPVEC_COREONLY 0xf0000000
#elif defined(CONFIG_PPC_P4080) /* also supports P4040 */
#define CONFIG_MAX_CPUS 8
@@ -391,6 +399,9 @@
#define CONFIG_SYS_FSL_SRIO_IB_WIN_NUM 5
#define CONFIG_SYS_FSL_RMU
#define CONFIG_SYS_FSL_SRIO_MSG_UNIT_NUM 2
+#define CONFIG_SYS_FSL_ERRATUM_A004510
+#define CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV 0x20
+#define CONFIG_SYS_FSL_CORENET_SNOOPVEC_COREONLY 0xff000000
#elif defined(CONFIG_PPC_P5020) /* also supports P5010 */
#define CONFIG_MAX_CPUS 2
@@ -414,6 +425,9 @@
#define CONFIG_SYS_FSL_SRIO_MAX_PORTS 2
#define CONFIG_SYS_FSL_SRIO_OB_WIN_NUM 9
#define CONFIG_SYS_FSL_SRIO_IB_WIN_NUM 5
+#define CONFIG_SYS_FSL_ERRATUM_A004510
+#define CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV 0x10
+#define CONFIG_SYS_FSL_CORENET_SNOOPVEC_COREONLY 0xc0000000
#elif defined(CONFIG_BSC9131)
#define CONFIG_MAX_CPUS 1
diff --git a/arch/powerpc/include/asm/processor.h b/arch/powerpc/include/asm/processor.h
index c942bec..a8ffedb 100644
--- a/arch/powerpc/include/asm/processor.h
+++ b/arch/powerpc/include/asm/processor.h
@@ -486,11 +486,13 @@
#define SPRN_L2CFG0 0x207 /* L2 Cache Configuration Register 0 */
#define SPRN_L1CSR0 0x3f2 /* L1 Data Cache Control and Status Register 0 */
#define L1CSR0_CPE 0x00010000 /* Data Cache Parity Enable */
+#define L1CSR0_CUL 0x00000400 /* (D-)Cache Unable to Lock */
#define L1CSR0_DCLFR 0x00000100 /* D-Cache Lock Flash Reset */
#define L1CSR0_DCFI 0x00000002 /* Data Cache Flash Invalidate */
#define L1CSR0_DCE 0x00000001 /* Data Cache Enable */
#define SPRN_L1CSR1 0x3f3 /* L1 Instruction Cache Control and Status Register 1 */
#define L1CSR1_CPE 0x00010000 /* Instruction Cache Parity Enable */
+#define L1CSR1_ICUL 0x00000400 /* I-Cache Unable to Lock */
#define L1CSR1_ICLFR 0x00000100 /* I-Cache Lock Flash Reset */
#define L1CSR1_ICFI 0x00000002 /* Instruction Cache Flash Invalidate */
#define L1CSR1_ICE 0x00000001 /* Instruction Cache Enable */
generated by cgit v1.1 at 2024-11-13 16:12:29 +0000