forked from Minki/linux
b4e6153704
Building the kernel with allyesconfig fails because the i.mx early resume code located in the .data section is unable to fixup the bl relocation as the branch target gets too far away. The idea of having code in the .data section allows for easy access to nearby data using relative addressing while the MMU is off. However it is probably best to move the code back to the .text section where it belongs and fixup the data access instead. This solves the bl reloc issue (at least until this becomes a general problem) and simplifies the code as well. Signed-off-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
60 lines
1.2 KiB
C
60 lines
1.2 KiB
C
/*
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* Copyright 2011 Freescale Semiconductor, Inc.
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* Copyright 2011 Linaro Ltd.
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*
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* The code contained herein is licensed under the GNU General Public
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* License. You may obtain a copy of the GNU General Public License
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* Version 2 or later at the following locations:
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*
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* http://www.opensource.org/licenses/gpl-license.html
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* http://www.gnu.org/copyleft/gpl.html
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*/
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#include <linux/init.h>
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#include <linux/io.h>
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#include <linux/of.h>
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#include <linux/suspend.h>
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#include <asm/cacheflush.h>
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#include <asm/proc-fns.h>
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#include <asm/suspend.h>
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#include <asm/hardware/cache-l2x0.h>
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#include "common.h"
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#include "hardware.h"
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static int imx6q_suspend_finish(unsigned long val)
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{
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cpu_do_idle();
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return 0;
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}
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static int imx6q_pm_enter(suspend_state_t state)
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{
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switch (state) {
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case PM_SUSPEND_MEM:
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imx6q_set_lpm(STOP_POWER_OFF);
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imx_gpc_pre_suspend();
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imx_set_cpu_jump(0, v7_cpu_resume);
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/* Zzz ... */
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cpu_suspend(0, imx6q_suspend_finish);
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imx_smp_prepare();
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imx_gpc_post_resume();
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imx6q_set_lpm(WAIT_CLOCKED);
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static const struct platform_suspend_ops imx6q_pm_ops = {
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.enter = imx6q_pm_enter,
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.valid = suspend_valid_only_mem,
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};
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void __init imx6q_pm_init(void)
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{
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suspend_set_ops(&imx6q_pm_ops);
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}
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