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[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>
This commit is contained in:
Catalin Marinas 2008-02-04 17:41:01 +01:00 committed by Russell King
parent 7dd19e755d
commit c4057f5260
4 changed files with 10 additions and 8 deletions
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3
arch/arm/mach-realview/core.c
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@ -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.

1
arch/arm/mach-realview/core.h
View File

@ -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);

6
arch/arm/mach-realview/realview_eb.c
View File

@ -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);
}
}

8
include/asm-arm/arch-realview/entry-macro.S
View File

@ -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