From c4057f5260650f165054bc56e16acc4aa0510d4f Mon Sep 17 00:00:00 2001
From: Catalin Marinas <catalin.marinas@arm.com>
Date: Mon, 4 Feb 2008 17:41:01 +0100
Subject: [PATCH] [ARM] 4819/1: RealView: Fix entry-macro.S to work with
multiple platforms
This patch modifies the get_irqnr_preamble macro to work with multiple
platforms at run-time by reading the address of the GIC controller from
the gic_cpu_base_addr variable. This variable is defined in core.c and
intialised in realview_eb.c (gic_init_irq).
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
arch/arm/mach-realview/core.c | 3 +++
arch/arm/mach-realview/core.h | 1 +
arch/arm/mach-realview/realview_eb.c | 6 ++++--
include/asm-arm/arch-realview/entry-macro.S | 8 ++------
4 files changed, 10 insertions(+), 8 deletions(-)
diff --git a/arch/arm/mach-realview/core.c b/arch/arm/mach-realview/core.c
index 046d31ce27b0..29514ac94f34 100644
--- a/arch/arm/mach-realview/core.c
+++ b/arch/arm/mach-realview/core.c
@@ -50,6 +50,9 @@
#define REALVIEW_REFCOUNTER (__io_address(REALVIEW_SYS_BASE) + REALVIEW_SYS_24MHz_OFFSET)
+/* used by entry-macro.S */
+void __iomem *gic_cpu_base_addr;
+
/*
* This is the RealView sched_clock implementation. This has
* a resolution of 41.7ns, and a maximum value of about 179s.
diff --git a/arch/arm/mach-realview/core.h b/arch/arm/mach-realview/core.h
index 9206db7b80bc..1c091372be6c 100644
--- a/arch/arm/mach-realview/core.h
+++ b/arch/arm/mach-realview/core.h
@@ -52,6 +52,7 @@ extern struct mmc_platform_data realview_mmc0_plat_data;
extern struct mmc_platform_data realview_mmc1_plat_data;
extern struct clk realview_clcd_clk;
extern struct clcd_board clcd_plat_data;
+extern void __iomem *gic_cpu_base_addr;
extern void realview_leds_event(led_event_t ledevt);
diff --git a/arch/arm/mach-realview/realview_eb.c b/arch/arm/mach-realview/realview_eb.c
index e42ac56e4db5..f36af1335024 100644
--- a/arch/arm/mach-realview/realview_eb.c
+++ b/arch/arm/mach-realview/realview_eb.c
@@ -256,8 +256,9 @@ static void __init gic_init_irq(void)
writel(0x00000000, __io_address(REALVIEW_SYS_LOCK));
/* core tile GIC, primary */
+ gic_cpu_base_addr = __io_address(REALVIEW_EB11MP_GIC_CPU_BASE);
gic_dist_init(0, __io_address(REALVIEW_EB11MP_GIC_DIST_BASE), 29);
- gic_cpu_init(0, __io_address(REALVIEW_EB11MP_GIC_CPU_BASE));
+ gic_cpu_init(0, gic_cpu_base_addr);
#ifndef CONFIG_REALVIEW_MPCORE_REVB
/* board GIC, secondary */
@@ -267,8 +268,9 @@ static void __init gic_init_irq(void)
#endif
} else {
/* board GIC, primary */
+ gic_cpu_base_addr = __io_address(REALVIEW_GIC_CPU_BASE);
gic_dist_init(0, __io_address(REALVIEW_GIC_DIST_BASE), 29);
- gic_cpu_init(0, __io_address(REALVIEW_GIC_CPU_BASE));
+ gic_cpu_init(0, gic_cpu_base_addr);
}
}
diff --git a/include/asm-arm/arch-realview/entry-macro.S b/include/asm-arm/arch-realview/entry-macro.S
index 629944deed50..cd26306d8e57 100644
--- a/include/asm-arm/arch-realview/entry-macro.S
+++ b/include/asm-arm/arch-realview/entry-macro.S
@@ -9,17 +9,13 @@
*/
#include <asm/hardware.h>
#include <asm/hardware/gic.h>
-#include <asm/arch/board-eb.h>
.macro disable_fiq
.endm
.macro get_irqnr_preamble, base, tmp
-#ifdef CONFIG_REALVIEW_MPCORE
- ldr \base, =IO_ADDRESS(REALVIEW_EB11MP_GIC_CPU_BASE)
-#else
- ldr \base, =IO_ADDRESS(REALVIEW_GIC_CPU_BASE)
-#endif
+ ldr \base, =gic_cpu_base_addr
+ ldr \base, [\base]
.endm
.macro arch_ret_to_user, tmp1, tmp2
--
2.20.1