[U-Boot] [PATCH v2 03/11] am33xx/omap: Allow cache enable for all Sitara/OMAP

[Simon Glass]

Enable the cache for all devices, unless CONFIG_SYS_DCACHE_OFF is defined.
This speeds up the Beaglebone Black boot considerable.

(Tested only on Beaglebone Black with SD card boot)

Signed-off-by: Simon Glass <sjg at chromium.org>
---

Changes in v2:
- Update to cover all omap devices

 arch/arm/cpu/armv7/am33xx/board.c              |  8 ----
 arch/arm/cpu/armv7/omap-common/Makefile        |  4 ++
 arch/arm/cpu/armv7/omap-common/hwinit-common.c | 42 -------------------
 arch/arm/cpu/armv7/omap-common/omap-cache.c    | 56 ++++++++++++++++++++++++++
 arch/arm/cpu/armv7/omap3/board.c               |  8 ----
 5 files changed, 60 insertions(+), 58 deletions(-)
 create mode 100644 arch/arm/cpu/armv7/omap-common/omap-cache.c

diff --git a/arch/arm/cpu/armv7/am33xx/board.c b/arch/arm/cpu/armv7/am33xx/board.c
index fb44cc8..92f3f22 100644
--- a/arch/arm/cpu/armv7/am33xx/board.c
+++ b/arch/arm/cpu/armv7/am33xx/board.c
@@ -243,11 +243,3 @@ void s_init(void)
 	sdram_init();
 }
 #endif
-
-#ifndef CONFIG_SYS_DCACHE_OFF
-void enable_caches(void)
-{
-	/* Enable D-cache. I-cache is already enabled in start.S */
-	dcache_enable();
-}
-#endif /* !CONFIG_SYS_DCACHE_OFF */
diff --git a/arch/arm/cpu/armv7/omap-common/Makefile b/arch/arm/cpu/armv7/omap-common/Makefile
index 59f5352..b7400d5 100644
--- a/arch/arm/cpu/armv7/omap-common/Makefile
+++ b/arch/arm/cpu/armv7/omap-common/Makefile
@@ -22,6 +22,10 @@ obj-y	+= pipe3-phy.o
 obj-$(CONFIG_SCSI_AHCI_PLAT) += sata.o
 endif
 
+ifeq ($(CONFIG_SYS_DCACHE_OFF),)
+obj-y	+= omap-cache.o
+endif
+
 ifeq ($(CONFIG_OMAP34XX),)
 obj-y	+= boot-common.o
 obj-y	+= lowlevel_init.o
diff --git a/arch/arm/cpu/armv7/omap-common/hwinit-common.c b/arch/arm/cpu/armv7/omap-common/hwinit-common.c
index 8ebc0ce..16baa73 100644
--- a/arch/arm/cpu/armv7/omap-common/hwinit-common.c
+++ b/arch/arm/cpu/armv7/omap-common/hwinit-common.c
@@ -18,13 +18,8 @@
 #include <asm/emif.h>
 #include <asm/omap_common.h>
 #include <linux/compiler.h>
-#include <asm/cache.h>
 #include <asm/system.h>
 
-#define ARMV7_DCACHE_WRITEBACK  0xe
-#define	ARMV7_DOMAIN_CLIENT	1
-#define ARMV7_DOMAIN_MASK	(0x3 << 0)
-
 DECLARE_GLOBAL_DATA_PTR;
 
 void do_set_mux(u32 base, struct pad_conf_entry const *array, int size)
@@ -260,40 +255,3 @@ int print_cpuinfo(void)
 	return 0;
 }
 #endif
-
-#ifndef CONFIG_SYS_DCACHE_OFF
-void enable_caches(void)
-{
-	/* Enable D-cache. I-cache is already enabled in start.S */
-	dcache_enable();
-}
-
-void dram_bank_mmu_setup(int bank)
-{
-	bd_t *bd = gd->bd;
-	int	i;
-
-	u32 start = bd->bi_dram[bank].start >> 20;
-	u32 size = bd->bi_dram[bank].size >> 20;
-	u32 end = start + size;
-
-	debug("%s: bank: %d\n", __func__, bank);
-	for (i = start; i < end; i++)
-		set_section_dcache(i, ARMV7_DCACHE_WRITEBACK);
-
-}
-
-void arm_init_domains(void)
-{
-	u32 reg;
-
-	reg = get_dacr();
-	/*
-	* Set DOMAIN to client access so that all permissions
-	* set in pagetables are validated by the mmu.
-	*/
-	reg &= ~ARMV7_DOMAIN_MASK;
-	reg |= ARMV7_DOMAIN_CLIENT;
-	set_dacr(reg);
-}
-#endif
diff --git a/arch/arm/cpu/armv7/omap-common/omap-cache.c b/arch/arm/cpu/armv7/omap-common/omap-cache.c
new file mode 100644
index 0000000..579bebf
--- /dev/null
+++ b/arch/arm/cpu/armv7/omap-common/omap-cache.c
@@ -0,0 +1,56 @@
+/*
+ *
+ * Common functions for OMAP4/5 based boards
+ *
+ * (C) Copyright 2010
+ * Texas Instruments, <www.ti.com>
+ *
+ * Author :
+ *	Aneesh V	<aneesh at ti.com>
+ *	Steve Sakoman	<steve at sakoman.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/cache.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define ARMV7_DCACHE_WRITEBACK  0xe
+#define ARMV7_DOMAIN_CLIENT	1
+#define ARMV7_DOMAIN_MASK	(0x3 << 0)
+
+void enable_caches(void)
+{
+	/* Enable D-cache. I-cache is already enabled in start.S */
+	dcache_enable();
+}
+
+void dram_bank_mmu_setup(int bank)
+{
+	bd_t *bd = gd->bd;
+	int	i;
+
+	u32 start = bd->bi_dram[bank].start >> 20;
+	u32 size = bd->bi_dram[bank].size >> 20;
+	u32 end = start + size;
+
+	debug("%s: bank: %d\n", __func__, bank);
+	for (i = start; i < end; i++)
+		set_section_dcache(i, ARMV7_DCACHE_WRITEBACK);
+}
+
+void arm_init_domains(void)
+{
+	u32 reg;
+
+	reg = get_dacr();
+	/*
+	* Set DOMAIN to client access so that all permissions
+	* set in pagetables are validated by the mmu.
+	*/
+	reg &= ~ARMV7_DOMAIN_MASK;
+	reg |= ARMV7_DOMAIN_CLIENT;
+	set_dacr(reg);
+}
diff --git a/arch/arm/cpu/armv7/omap3/board.c b/arch/arm/cpu/armv7/omap3/board.c
index 2922816..74c037b 100644
--- a/arch/arm/cpu/armv7/omap3/board.c
+++ b/arch/arm/cpu/armv7/omap3/board.c
@@ -478,11 +478,3 @@ void omap3_outer_cache_disable(void)
 	omap3_update_aux_cr(0, 0x2);
 }
 #endif /* !CONFIG_SYS_L2CACHE_OFF */
-
-#ifndef CONFIG_SYS_DCACHE_OFF
-void enable_caches(void)
-{
-	/* Enable D-cache. I-cache is already enabled in start.S */
-	dcache_enable();
-}
-#endif /* !CONFIG_SYS_DCACHE_OFF */
-- 
1.9.1.423.g4596e3a