ARM: AM43XX: Add functions to enable and disable EDMA3 clocks

[oweals/u-boot.git] / arch / arm / cpu / armv7 / start.S

diff --git a/arch/arm/cpu/armv7/start.S b/arch/arm/cpu/armv7/start.S
index 1c7e6f01f9414c09bac40a5a4d81381d98bae4c5..b18094447b0601e8a7ff539c0b286c693c66d5da 100644 (file)
--- a/arch/arm/cpu/armv7/start.S
+++ b/arch/arm/cpu/armv7/start.S
@@ -187,6 +187,27 @@ ENTRY(cpu_init_cp15)
 skip_errata_798870:
 #endif
 
+#ifdef CONFIG_ARM_ERRATA_801819
+       cmp     r2, #0x24               @ Applies to lt including R2p4
+       bgt     skip_errata_801819      @ skip if not affected rev
+       cmp     r2, #0x20               @ Applies to including and above R2p0
+       blt     skip_errata_801819      @ skip if not affected rev
+       mrc     p15, 0, r0, c0, c0, 6   @ pick up REVIDR reg
+       and     r0, r0, #1 << 3         @ check REVIDR[3]
+       cmp     r0, #1 << 3
+       beq     skip_errata_801819      @ skip erratum if REVIDR[3] is set
+
+       mrc     p15, 0, r0, c1, c0, 1   @ read auxilary control register
+       orr     r0, r0, #3 << 27        @ Disables streaming. All write-allocate
+                                       @ lines allocate in the L1 or L2 cache.
+       orr     r0, r0, #3 << 25        @ Disables streaming. All write-allocate
+                                       @ lines allocate in the L1 cache.
+       push    {r1-r5}                 @ Save the cpu info registers
+       bl      v7_arch_cp15_set_acr
+       pop     {r1-r5}                 @ Restore the cpu info - fall through
+skip_errata_801819:
+#endif
+
 #ifdef CONFIG_ARM_ERRATA_454179
        cmp     r2, #0x21               @ Only on < r2p1
        bge     skip_errata_454179