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ARM: 5843/1: OMAP3: add AMBA devices for ETM and ETB 

This enables on-chip tracing components found in omap3xxx.

Signed-off-by: Alexander Shishkin <virtuoso@slind.org>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
hifive-unleashed-5.1
Alexander Shishkin 2009-12-01 14:03:31 +01:00 committed by Russell King
parent c5d6c7708c
commit 183bd50f4f
4 changed files with 81 additions and 4 deletions
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8
arch/arm/mach-omap2/Kconfig
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@ -100,3 +100,11 @@ config MACH_OMAP_ZOOM2
config MACH_OMAP_4430SDP
bool "OMAP 4430 SDP board"
depends on ARCH_OMAP4
config OMAP3_EMU
bool "OMAP3 debugging peripherals"
depends on ARCH_OMAP3
select OC_ETM
help
Say Y here to enable debugging hardware of omap3

3
arch/arm/mach-omap2/Makefile
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@ -44,6 +44,9 @@ obj-$(CONFIG_ARCH_OMAP4) += cm4xxx.o
obj-$(CONFIG_ARCH_OMAP2) += clock24xx.o
obj-$(CONFIG_ARCH_OMAP3) += clock34xx.o
# EMU peripherals
obj-$(CONFIG_OMAP3_EMU) += emu.o
iommu-y += iommu2.o
iommu-$(CONFIG_ARCH_OMAP3) += omap3-iommu.o

8
arch/arm/mach-omap2/clock34xx.c
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@ -119,7 +119,7 @@ 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),
@ -138,7 +138,7 @@ 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),
@ -147,7 +147,7 @@ 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),
@ -302,7 +302,7 @@ 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),

66
arch/arm/mach-omap2/emu.c 100644
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@ -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);