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sunxi: Move remaining PSCI assembly code to C

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This patch finishes the rewrite of sunxi specific PSCI parts into C
code.

The assembly-only stack setup code has been factored out into a common
function for ARMv7. The GIC setup code can be renamed as psci_arch_init.
And we can use an empty stub function for psci_text_end.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Chen-Yu Tsai 2016-06-19 12:38:32 +08:00 committed by Hans de Goede
parent b52813239c
commit 94a389b257
3 changed files with 6 additions and 54 deletions
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1
arch/arm/cpu/armv7/sunxi/Makefile
View File

@ -14,7 +14,6 @@ obj-$(CONFIG_MACH_SUN8I_H3) += tzpc.o
ifndef CONFIG_SPL_BUILD
obj-$(CONFIG_ARMV7_PSCI) += psci.o
obj-$(CONFIG_ARMV7_PSCI) += psci_head.o
endif
ifdef CONFIG_SPL_BUILD

7
arch/arm/cpu/armv7/sunxi/psci.c
View File

@ -250,7 +250,7 @@ void __secure psci_cpu_off(void)
wfi();
}
void __secure sunxi_gic_init(void)
void __secure psci_arch_init(void)
{
u32 reg;
@ -271,3 +271,8 @@ void __secure sunxi_gic_init(void)
reg &= ~BIT(0); /* Secure mode */
cp15_write_scr(reg);
}
/* dummy entry for end of psci text */
void __secure psci_text_end(void)
{
}

52
arch/arm/cpu/armv7/sunxi/psci_head.S
View File

@ -1,52 +0,0 @@
/*
* Copyright (C) 2013 - ARM Ltd
* Author: Marc Zyngier <marc.zyngier@arm.com>
*
* Based on code by Carl van Schaik <carl@ok-labs.com>.
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <linux/linkage.h>
#include <asm/arch-armv7/generictimer.h>
#include <asm/gic.h>
#include <asm/macro.h>
#include <asm/psci.h>
#include <asm/arch/cpu.h>
/*
* Memory layout:
*
* SECURE_RAM to text_end :
* ._secure_text section
* text_end to ALIGN_PAGE(text_end):
* nothing
* ALIGN_PAGE(text_end) to ALIGN_PAGE(text_end) + 0x1000)
* 1kB of stack per CPU (4 CPUs max).
*/
.pushsection ._secure.text, "ax"
.arch_extension sec
#define GICD_BASE (SUNXI_GIC400_BASE + 0x1000)
#define GICC_BASE (SUNXI_GIC400_BASE + 0x2000)
ENTRY(psci_arch_init)
b sunxi_gic_init
ENDPROC(psci_arch_init)
ENTRY(psci_text_end)
.popsection