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https://github.com/smaeul/u-boot.git
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7de4703691
1. add basic psci support for imx7 chip. 2. support cpu_on and cpu_off. 3. switch to non-secure mode when boot linux kernel. 4. set csu allow accessing all peripherial register in non-secure mode. Signed-off-by: Frank Li <Frank.Li@freescale.com> Signed-off-by: Peng Fan <Peng.Fan@freescale.com> Cc: Stefano Babic <sbabic@denx.de> Cc: Fabio Estevam <fabio.estevam@freescale.com>
55 lines
703 B
ArmAsm
55 lines
703 B
ArmAsm
#include <config.h>
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#include <linux/linkage.h>
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#include <asm/armv7.h>
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#include <asm/arch-armv7/generictimer.h>
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#include <asm/psci.h>
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.pushsection ._secure.text, "ax"
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.arch_extension sec
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@ r1 = target CPU
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@ r2 = target PC
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.globl psci_arch_init
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psci_arch_init:
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mov r6, lr
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bl psci_get_cpu_id
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bl psci_get_cpu_stack_top
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mov sp, r0
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bx r6
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@ r1 = target CPU
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@ r2 = target PC
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.globl psci_cpu_on
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psci_cpu_on:
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push {lr}
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mov r0, r1
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bl psci_get_cpu_stack_top
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str r2, [r0]
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dsb
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ldr r2, =psci_cpu_entry
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bl imx_cpu_on
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pop {pc}
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.globl psci_cpu_off
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psci_cpu_off:
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bl psci_cpu_off_common
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bl psci_get_cpu_id
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bl imx_cpu_off
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1: wfi
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b 1b
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.globl psci_text_end
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psci_text_end:
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.popsection
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