ARM: OMAP4: Move the barrier memboclk_steal() as part of reserve callback

arm_memblock_steal() is not suppose to be used outside ->reserve callback.
OMAP barrier errata code was using it outside reserve callback and hence
it was broken.

Move the allocation as part of ->reserve callback to fix the it.

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig
index 41e6612ecbafb3e2aebbf65fff58040507961bd2..ac6b1d3554d8e3a30c167c6ad574c368880b8c84 100644 (file)
--- a/arch/arm/mach-omap2/Kconfig
+++ b/arch/arm/mach-omap2/Kconfig
@@ -365,8 +365,8 @@ config OMAP3_SDRC_AC_TIMING
          going on could result in system crashes;
 
 config OMAP4_ERRATA_I688
-       bool "OMAP4 errata: Async Bridge Corruption (BROKEN)"
-       depends on ARCH_OMAP4 && BROKEN
+       bool "OMAP4 errata: Async Bridge Corruption"
+       depends on ARCH_OMAP4
        select ARCH_HAS_BARRIERS
        help
          If a data is stalled inside asynchronous bridge because of back

diff --git a/arch/arm/mach-omap2/common.h b/arch/arm/mach-omap2/common.h
index febffde2ff109ed4682fe0e311f93ee23aee2cbd..7e9338e8d684c7ff442a517be55de218ba34e8c7 100644 (file)
--- a/arch/arm/mach-omap2/common.h
+++ b/arch/arm/mach-omap2/common.h
@@ -132,6 +132,7 @@ void omap3_map_io(void);
 void am33xx_map_io(void);
 void omap4_map_io(void);
 void ti81xx_map_io(void);
+void omap_barriers_init(void);
 
 /**
  * omap_test_timeout - busy-loop, testing a condition

diff --git a/arch/arm/mach-omap2/io.c b/arch/arm/mach-omap2/io.c
index 3f174d51f67fb8e4f41f01ebbbe577c892999449..f64aa79a786945aa14755ba25e68b963e6055c4b 100644 (file)
--- a/arch/arm/mach-omap2/io.c
+++ b/arch/arm/mach-omap2/io.c
@@ -307,6 +307,7 @@ void __init omapam33xx_map_common_io(void)
 void __init omap44xx_map_common_io(void)
 {
        iotable_init(omap44xx_io_desc, ARRAY_SIZE(omap44xx_io_desc));
+       omap_barriers_init();
 }
 #endif
 

diff --git a/arch/arm/mach-omap2/omap4-common.c b/arch/arm/mach-omap2/omap4-common.c
index 40a8fbc07e4b766717b35e8b69f88794c1335df7..ebc595091312f325cff5638263dd72a09de9962e 100644 (file)
--- a/arch/arm/mach-omap2/omap4-common.c
+++ b/arch/arm/mach-omap2/omap4-common.c
@@ -24,6 +24,7 @@
 
 #include <plat/irqs.h>
 #include <plat/sram.h>
+#include <plat/omap-secure.h>
 
 #include <mach/hardware.h>
 #include <mach/omap-wakeupgen.h>
@@ -43,6 +44,9 @@ static void __iomem *sar_ram_base;
 
 void __iomem *dram_sync, *sram_sync;
 
+static phys_addr_t paddr;
+static u32 size;
+
 void omap_bus_sync(void)
 {
        if (dram_sync && sram_sync) {
@@ -52,18 +56,20 @@ void omap_bus_sync(void)
        }
 }
 
-static int __init omap_barriers_init(void)
+/* Steal one page physical memory for barrier implementation */
+int __init omap_barrier_reserve_memblock(void)
 {
-       struct map_desc dram_io_desc[1];
-       phys_addr_t paddr;
-       u32 size;
-
-       if (!cpu_is_omap44xx())
-               return -ENODEV;
 
        size = ALIGN(PAGE_SIZE, SZ_1M);
        paddr = arm_memblock_steal(size, SZ_1M);
 
+       return 0;
+}
+
+void __init omap_barriers_init(void)
+{
+       struct map_desc dram_io_desc[1];
+
        dram_io_desc[0].virtual = OMAP4_DRAM_BARRIER_VA;
        dram_io_desc[0].pfn = __phys_to_pfn(paddr);
        dram_io_desc[0].length = size;
@@ -75,9 +81,10 @@ static int __init omap_barriers_init(void)
        pr_info("OMAP4: Map 0x%08llx to 0x%08lx for dram barrier\n",
                (long long) paddr, dram_io_desc[0].virtual);
 
-       return 0;
 }
-core_initcall(omap_barriers_init);
+#else
+void __init omap_barriers_init(void)
+{}
 #endif
 
 void __init gic_init_irq(void)

diff --git a/arch/arm/plat-omap/common.c b/arch/arm/plat-omap/common.c
index 06383b51e6553b0aab931cab4f700972e9e52514..4de7d1e79e73d68615ccb8cc4d6c0c91b10f685e 100644 (file)
--- a/arch/arm/plat-omap/common.c
+++ b/arch/arm/plat-omap/common.c
@@ -69,6 +69,7 @@ void __init omap_reserve(void)
        omap_vram_reserve_sdram_memblock();
        omap_dsp_reserve_sdram_memblock();
        omap_secure_ram_reserve_memblock();
+       omap_barrier_reserve_memblock();
 }
 
 void __init omap_init_consistent_dma_size(void)

diff --git a/arch/arm/plat-omap/include/plat/omap-secure.h b/arch/arm/plat-omap/include/plat/omap-secure.h
index 3047ff923a63cc62747d38aa51686f2a2e2cdc64..8c7994ce9869a98fc7b673d6ebfcc0b4d63187c0 100644 (file)
--- a/arch/arm/plat-omap/include/plat/omap-secure.h
+++ b/arch/arm/plat-omap/include/plat/omap-secure.h
@@ -10,4 +10,10 @@ static inline void omap_secure_ram_reserve_memblock(void)
 { }
 #endif
 
+#ifdef CONFIG_OMAP4_ERRATA_I688
+extern int omap_barrier_reserve_memblock(void);
+#else
+static inline void omap_barrier_reserve_memblock(void)
+{ }
+#endif
 #endif /* __OMAP_SECURE_H__ */