Commit 6a37ff38 authored by Soren Brinkmann's avatar Soren Brinkmann Committed by Michal Simek
Browse files

arm: zynq: Invalidate L1 in secondary boot 



During boot, Linux initiates a clean-invalidate operation only, resulting
in faulty data to be written to the memory system during resume.
Therefore invalidate the L1 in the secondary boot path to avoid these
issues.

Signed-off-by: default avatarSoren Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: default avatarMichal Simek <michal.simek@xilinx.com>
parent 11e03130

arch/arm/mach-zynq/common.h

+2 −0
Original line number Diff line number Diff line
@@ -17,6 +17,8 @@ 
#ifndef __MACH_ZYNQ_COMMON_H__

#define __MACH_ZYNQ_COMMON_H__



void zynq_secondary_startup(void);



extern int zynq_slcr_init(void);

extern void zynq_slcr_system_reset(void);

extern void zynq_slcr_cpu_stop(int cpu);

arch/arm/mach-zynq/headsmp.S

+5 −1
Original line number Diff line number Diff line
@@ -18,5 +18,9 @@ zynq_secondary_trampoline_jump: 
	.word	/* cpu 1 */

.globl zynq_secondary_trampoline_end

zynq_secondary_trampoline_end:



ENDPROC(zynq_secondary_trampoline)



ENTRY(zynq_secondary_startup)

	bl	v7_invalidate_l1

	b	secondary_startup

ENDPROC(zynq_secondary_startup)

arch/arm/mach-zynq/platsmp.c

+1 −1
Original line number Diff line number Diff line
@@ -90,7 +90,7 @@ EXPORT_SYMBOL(zynq_cpun_start); 
static int zynq_boot_secondary(unsigned int cpu,

						struct task_struct *idle)

{

	return zynq_cpun_start(virt_to_phys(secondary_startup), cpu);

	return zynq_cpun_start(virt_to_phys(zynq_secondary_startup), cpu);

}



/*

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