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-rw-r--r--arch/arm/mm/Kconfig4
-rw-r--r--arch/arm/mm/dma-mapping.c4
-rw-r--r--arch/arm/mm/proc-v7.S67
3 files changed, 72 insertions, 3 deletions
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index 94186b6..3fd629d 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -352,6 +352,10 @@ config CPU_PJ4
select ARM_THUMBEE
select CPU_V7
+config CPU_PJ4B
+ bool
+ select CPU_V7
+
# ARMv6
config CPU_V6
bool "Support ARM V6 processor" if ARCH_INTEGRATOR || MACH_REALVIEW_EB || MACH_REALVIEW_PBX
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index 58bc3e4..5383bc0 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -124,8 +124,6 @@ static void arm_dma_sync_single_for_device(struct device *dev,
__dma_page_cpu_to_dev(page, offset, size, dir);
}
-static int arm_dma_set_mask(struct device *dev, u64 dma_mask);
-
struct dma_map_ops arm_dma_ops = {
.alloc = arm_dma_alloc,
.free = arm_dma_free,
@@ -971,7 +969,7 @@ int dma_supported(struct device *dev, u64 mask)
}
EXPORT_SYMBOL(dma_supported);
-static int arm_dma_set_mask(struct device *dev, u64 dma_mask)
+int arm_dma_set_mask(struct device *dev, u64 dma_mask)
{
if (!dev->dma_mask || !dma_supported(dev, dma_mask))
return -EIO;
diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S
index 42cc833..350f6a7 100644
--- a/arch/arm/mm/proc-v7.S
+++ b/arch/arm/mm/proc-v7.S
@@ -169,6 +169,63 @@ __v7_ca15mp_setup:
orreq r0, r0, r10 @ Enable CPU-specific SMP bits
mcreq p15, 0, r0, c1, c0, 1
#endif
+
+__v7_pj4b_setup:
+#ifdef CONFIG_CPU_PJ4B
+
+/* Auxiliary Debug Modes Control 1 Register */
+#define PJ4B_STATIC_BP (1 << 2) /* Enable Static BP */
+#define PJ4B_INTER_PARITY (1 << 8) /* Disable Internal Parity Handling */
+#define PJ4B_BCK_OFF_STREX (1 << 5) /* Enable the back off of STREX instr */
+#define PJ4B_CLEAN_LINE (1 << 16) /* Disable data transfer for clean line */
+
+/* Auxiliary Debug Modes Control 2 Register */
+#define PJ4B_FAST_LDR (1 << 23) /* Disable fast LDR */
+#define PJ4B_SNOOP_DATA (1 << 25) /* Do not interleave write and snoop data */
+#define PJ4B_CWF (1 << 27) /* Disable Critical Word First feature */
+#define PJ4B_OUTSDNG_NC (1 << 29) /* Disable outstanding non cacheable rqst */
+#define PJ4B_L1_REP_RR (1 << 30) /* L1 replacement - Strict round robin */
+#define PJ4B_AUX_DBG_CTRL2 (PJ4B_SNOOP_DATA | PJ4B_CWF |\
+ PJ4B_OUTSDNG_NC | PJ4B_L1_REP_RR)
+
+/* Auxiliary Functional Modes Control Register 0 */
+#define PJ4B_SMP_CFB (1 << 1) /* Set SMP mode. Join the coherency fabric */
+#define PJ4B_L1_PAR_CHK (1 << 2) /* Support L1 parity checking */
+#define PJ4B_BROADCAST_CACHE (1 << 8) /* Broadcast Cache and TLB maintenance */
+
+/* Auxiliary Debug Modes Control 0 Register */
+#define PJ4B_WFI_WFE (1 << 22) /* WFI/WFE - serve the DVM and back to idle */
+
+ /* Auxiliary Debug Modes Control 1 Register */
+ mrc p15, 1, r0, c15, c1, 1
+ orr r0, r0, #PJ4B_CLEAN_LINE
+ orr r0, r0, #PJ4B_BCK_OFF_STREX
+ orr r0, r0, #PJ4B_INTER_PARITY
+ bic r0, r0, #PJ4B_STATIC_BP
+ mcr p15, 1, r0, c15, c1, 1
+
+ /* Auxiliary Debug Modes Control 2 Register */
+ mrc p15, 1, r0, c15, c1, 2
+ bic r0, r0, #PJ4B_FAST_LDR
+ orr r0, r0, #PJ4B_AUX_DBG_CTRL2
+ mcr p15, 1, r0, c15, c1, 2
+
+ /* Auxiliary Functional Modes Control Register 0 */
+ mrc p15, 1, r0, c15, c2, 0
+#ifdef CONFIG_SMP
+ orr r0, r0, #PJ4B_SMP_CFB
+#endif
+ orr r0, r0, #PJ4B_L1_PAR_CHK
+ orr r0, r0, #PJ4B_BROADCAST_CACHE
+ mcr p15, 1, r0, c15, c2, 0
+
+ /* Auxiliary Debug Modes Control 0 Register */
+ mrc p15, 1, r0, c15, c1, 0
+ orr r0, r0, #PJ4B_WFI_WFE
+ mcr p15, 1, r0, c15, c1, 0
+
+#endif /* CONFIG_CPU_PJ4B */
+
__v7_setup:
adr r12, __v7_setup_stack @ the local stack
stmia r12, {r0-r5, r7, r9, r11, lr}
@@ -342,6 +399,16 @@ __v7_ca9mp_proc_info:
.long 0xff0ffff0
__v7_proc __v7_ca9mp_setup
.size __v7_ca9mp_proc_info, . - __v7_ca9mp_proc_info
+
+ /*
+ * Marvell PJ4B processor.
+ */
+ .type __v7_pj4b_proc_info, #object
+__v7_pj4b_proc_info:
+ .long 0x562f5840
+ .long 0xfffffff0
+ __v7_proc __v7_pj4b_setup
+ .size __v7_pj4b_proc_info, . - __v7_pj4b_proc_info
#endif /* CONFIG_ARM_LPAE */
/*