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authorHaiying Wang <Haiying.Wang@freescale.com>2009-03-27 17:02:44 -0400
committerKumar Gala <galak@kernel.crashing.org>2009-03-30 13:33:51 -0500
commit22b6dbc1696d927d938dd4e16f65d83c0d4fb3f4 (patch)
tree611cd5baec5cb44cb29fc46a2d2d8f7fb8ba23e6 /cpu
parent2d4de6ae5be54b367a72a7ef4e0cf36a9cd4881f (diff)
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MPC85xx: Add MPC8569 CPU support
There is a workaround for MPC8569 CPU Errata, which needs to set Bit 13 of LBCR in 4K bootpage. We setup a temp TLB for eLBC controller in bootpage, then invalidate it after LBCR bit 13 is set. Signed-off-by: Haiying Wang <Haiying.Wang@freescale.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'cpu')
-rw-r--r--cpu/mpc85xx/Makefile1
-rw-r--r--cpu/mpc85xx/cpu.c2
-rw-r--r--cpu/mpc85xx/start.S49
3 files changed, 52 insertions, 0 deletions
diff --git a/cpu/mpc85xx/Makefile b/cpu/mpc85xx/Makefile
index 99d88a8..8809302 100644
--- a/cpu/mpc85xx/Makefile
+++ b/cpu/mpc85xx/Makefile
@@ -49,6 +49,7 @@ COBJS-$(CONFIG_MPC8544) += ddr-gen2.o
COBJS-$(CONFIG_MPC8572) += ddr-gen3.o
COBJS-$(CONFIG_MPC8536) += ddr-gen3.o
COBJS-$(CONFIG_P2020) += ddr-gen3.o
+COBJS-$(CONFIG_MPC8569) += ddr-gen3.o
COBJS-$(CONFIG_MPC8536) += mpc8536_serdes.o
COBJS = traps.o cpu.o cpu_init.o speed.o interrupts.o tlb.o \
diff --git a/cpu/mpc85xx/cpu.c b/cpu/mpc85xx/cpu.c
index 5b72fe5..ef976a4 100644
--- a/cpu/mpc85xx/cpu.c
+++ b/cpu/mpc85xx/cpu.c
@@ -61,6 +61,8 @@ struct cpu_type cpu_type_list [] = {
CPU_TYPE_ENTRY(8567, 8567_E),
CPU_TYPE_ENTRY(8568, 8568),
CPU_TYPE_ENTRY(8568, 8568_E),
+ CPU_TYPE_ENTRY(8569, 8569),
+ CPU_TYPE_ENTRY(8569, 8569_E),
CPU_TYPE_ENTRY(8572, 8572),
CPU_TYPE_ENTRY(8572, 8572_E),
CPU_TYPE_ENTRY(P2020, P2020),
diff --git a/cpu/mpc85xx/start.S b/cpu/mpc85xx/start.S
index 89eea8c..4f7236f 100644
--- a/cpu/mpc85xx/start.S
+++ b/cpu/mpc85xx/start.S
@@ -186,6 +186,55 @@ _start_e500:
mtspr DBCR0,r0
#endif
+#ifdef CONFIG_MPC8569
+#define CONFIG_SYS_LBC_ADDR (CONFIG_SYS_CCSRBAR_DEFAULT + 0x5000)
+#define CONFIG_SYS_LBCR_ADDR (CONFIG_SYS_LBC_ADDR + 0xd0)
+
+ /* MPC8569 Rev.0 silcon needs to set bit 13 of LBCR to allow elBC to
+ * use address space which is more than 12bits, and it must be done in
+ * the 4K boot page. So we set this bit here.
+ */
+
+ /* create a temp mapping TLB0[0] for LBCR */
+ lis r6,FSL_BOOKE_MAS0(0, 0, 0)@h
+ ori r6,r6,FSL_BOOKE_MAS0(0, 0, 0)@l
+
+ lis r7,FSL_BOOKE_MAS1(1, 0, 0, 0, BOOKE_PAGESZ_4K)@h
+ ori r7,r7,FSL_BOOKE_MAS1(1, 0, 0, 0, BOOKE_PAGESZ_4K)@l
+
+ lis r8,FSL_BOOKE_MAS2(CONFIG_SYS_LBC_ADDR, MAS2_I|MAS2_G)@h
+ ori r8,r8,FSL_BOOKE_MAS2(CONFIG_SYS_LBC_ADDR, MAS2_I|MAS2_G)@l
+
+ lis r9,FSL_BOOKE_MAS3(CONFIG_SYS_LBC_ADDR, 0,
+ (MAS3_SX|MAS3_SW|MAS3_SR))@h
+ ori r9,r9,FSL_BOOKE_MAS3(CONFIG_SYS_LBC_ADDR, 0,
+ (MAS3_SX|MAS3_SW|MAS3_SR))@l
+
+ mtspr MAS0,r6
+ mtspr MAS1,r7
+ mtspr MAS2,r8
+ mtspr MAS3,r9
+ isync
+ msync
+ tlbwe
+
+ /* Set LBCR register */
+ lis r4,CONFIG_SYS_LBCR_ADDR@h
+ ori r4,r4,CONFIG_SYS_LBCR_ADDR@l
+
+ lis r5,CONFIG_SYS_LBC_LBCR@h
+ ori r5,r5,CONFIG_SYS_LBC_LBCR@l
+ stw r5,0(r4)
+ isync
+
+ /* invalidate this temp TLB */
+ lis r4,CONFIG_SYS_LBC_ADDR@h
+ ori r4,r4,CONFIG_SYS_LBC_ADDR@l
+ tlbivax 0,r4
+ isync
+
+#endif /* CONFIG_MPC8569 */
+
/* create a temp mapping in AS=1 to the 4M boot window */
lis r6,FSL_BOOKE_MAS0(1, 15, 0)@h
ori r6,r6,FSL_BOOKE_MAS0(1, 15, 0)@l