This enables on-chip tracing components found in omap3xxx.
Signed-off-by: Alexander Shishkin <virtuoso@xxxxxxxxx>
---
arch/arm/mach-omap2/Kconfig | 8 +++++
arch/arm/mach-omap2/Makefile | 3 ++
arch/arm/mach-omap2/clock34xx.c | 8 ++--
arch/arm/mach-omap2/emu.c | 66 +++++++++++++++++++++++++++++++++++++++
4 files changed, 81 insertions(+), 4 deletions(-)
create mode 100644 arch/arm/mach-omap2/emu.c
diff --git a/arch/arm/mach-omap2/Kconfig b/arch/arm/mach-omap2/Kconfig
index 15cb529..f50d5bc 100644
--- a/arch/arm/mach-omap2/Kconfig
+++ b/arch/arm/mach-omap2/Kconfig
@@ -96,3 +96,11 @@ config MACH_OMAP_ZOOM2
config MACH_OMAP_4430SDP
bool "OMAP 4430 SDP board"
depends on ARCH_OMAP4
+
+config OMAP3_EMU
+ bool "OMAP3 tracing peripherals"
+ depends on ARCH_OMAP3
+ select OC_ETM
+ help
+ Say Y here to enable tracing hardware of omap3
+
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 954693c..c0ceb8c 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -46,6 +46,9 @@ obj-$(CONFIG_ARCH_OMAP2) += clock24xx.o
obj-$(CONFIG_ARCH_OMAP3) += clock34xx.o
obj-$(CONFIG_OMAP_PM_SRF) += resource34xx.o
+# EMU peripherals
+obj-$(CONFIG_OMAP3_EMU) += emu.o
+
iommu-y += iommu2.o
iommu-$(CONFIG_ARCH_OMAP3) += omap3-iommu.o
diff --git a/arch/arm/mach-omap2/clock34xx.c b/arch/arm/mach-omap2/clock34xx.c
index da5bc1f..59d4320 100644
--- a/arch/arm/mach-omap2/clock34xx.c
+++ b/arch/arm/mach-omap2/clock34xx.c
@@ -123,7 +123,7 @@ static struct omap_clk omap34xx_clks[] = {
CLK(NULL, "dpll3_m2x2_ck", &dpll3_m2x2_ck, CK_343X),
CLK(NULL, "dpll3_m3_ck", &dpll3_m3_ck, CK_343X),
CLK(NULL, "dpll3_m3x2_ck", &dpll3_m3x2_ck, CK_343X),
- CLK(NULL, "emu_core_alwon_ck", &emu_core_alwon_ck, CK_343X),
+ CLK("etb", "emu_core_alwon_ck", &emu_core_alwon_ck, CK_343X),
CLK(NULL, "dpll4_ck", &dpll4_ck, CK_343X),
CLK(NULL, "dpll4_x2_ck", &dpll4_x2_ck, CK_343X),
CLK(NULL, "omap_96m_alwon_fck", &omap_96m_alwon_fck, CK_343X),
@@ -142,7 +142,7 @@ static struct omap_clk omap34xx_clks[] = {
CLK(NULL, "dpll4_m5x2_ck", &dpll4_m5x2_ck, CK_343X),
CLK(NULL, "dpll4_m6_ck", &dpll4_m6_ck, CK_343X),
CLK(NULL, "dpll4_m6x2_ck", &dpll4_m6x2_ck, CK_343X),
- CLK(NULL, "emu_per_alwon_ck", &emu_per_alwon_ck, CK_343X),
+ CLK("etb", "emu_per_alwon_ck", &emu_per_alwon_ck, CK_343X),
CLK(NULL, "dpll5_ck", &dpll5_ck, CK_3430ES2),
CLK(NULL, "dpll5_m2_ck", &dpll5_m2_ck, CK_3430ES2),
CLK(NULL, "clkout2_src_ck", &clkout2_src_ck, CK_343X),
@@ -151,7 +151,7 @@ static struct omap_clk omap34xx_clks[] = {
CLK(NULL, "dpll1_fck", &dpll1_fck, CK_343X),
CLK(NULL, "mpu_ck", &mpu_ck, CK_343X),
CLK(NULL, "arm_fck", &arm_fck, CK_343X),
- CLK(NULL, "emu_mpu_alwon_ck", &emu_mpu_alwon_ck, CK_343X),
+ CLK("etb", "emu_mpu_alwon_ck", &emu_mpu_alwon_ck, CK_343X),
CLK(NULL, "dpll2_fck", &dpll2_fck, CK_343X),
CLK(NULL, "iva2_ck", &iva2_ck, CK_343X),
CLK(NULL, "l3_ick", &l3_ick, CK_343X),
@@ -306,7 +306,7 @@ static struct omap_clk omap34xx_clks[] = {
CLK("omap-mcbsp.2", "fck", &mcbsp2_fck, CK_343X),
CLK("omap-mcbsp.3", "fck", &mcbsp3_fck, CK_343X),
CLK("omap-mcbsp.4", "fck", &mcbsp4_fck, CK_343X),
- CLK(NULL, "emu_src_ck", &emu_src_ck, CK_343X),
+ CLK("etb", "emu_src_ck", &emu_src_ck, CK_343X),
CLK(NULL, "pclk_fck", &pclk_fck, CK_343X),
CLK(NULL, "pclkx2_fck", &pclkx2_fck, CK_343X),
CLK(NULL, "atclk_fck", &atclk_fck, CK_343X),
diff --git a/arch/arm/mach-omap2/emu.c b/arch/arm/mach-omap2/emu.c
new file mode 100644
index 0000000..ec0d984
--- /dev/null
+++ b/arch/arm/mach-omap2/emu.c
@@ -0,0 +1,66 @@
+/*
+ * emu.c
+ *
+ * ETM and ETB CoreSight components' resources as found in OMAP3xxx.
+ *
+ * Copyright (C) 2009 Nokia Corporation.
+ * Alexander Shishkin
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/amba/bus.h>
+#include <linux/io.h>
+#include <linux/clk.h>
+#include <linux/err.h>
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Alexander Shishkin");
+
+/* Cortex CoreSight components within omap3xxx EMU */
+#define ETM_BASE (L4_EMU_34XX_PHYS + 0x10000)
+#define DBG_BASE (L4_EMU_34XX_PHYS + 0x11000)
+#define ETB_BASE (L4_EMU_34XX_PHYS + 0x1b000)
+#define DAPCTL (L4_EMU_34XX_PHYS + 0x1d000)
+
+static struct amba_device omap3_etb_device = {
+ .dev = {
+ .init_name = "etb",
+ },
+ .res = {
+ .start = ETB_BASE,
+ .end = ETB_BASE + SZ_4K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ .periphid = 0x000bb907,
+};
+
+static struct amba_device omap3_etm_device = {
+ .dev = {
+ .init_name = "etm",
+ },
+ .res = {
+ .start = ETM_BASE,
+ .end = ETM_BASE + SZ_4K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ .periphid = 0x102bb921,
+};
+
+static int __init emu_init(void)
+{
+ amba_device_register(&omap3_etb_device, &iomem_resource);
+ amba_device_register(&omap3_etm_device, &iomem_resource);
+
+ return 0;
+}
+
+subsys_initcall(emu_init);
+
--
1.6.3.3
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