6b13f685e
 김민수
BSP 최초 추가
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/*
* Copyright 2011-2014 Freescale Semiconductor, Inc.
* Copyright 2011 Linaro Ltd.
*
* The code contained herein is licensed under the GNU General Public
* License. You may obtain a copy of the GNU General Public License
* Version 2 or later at the following locations:
*
* http://www.opensource.org/licenses/gpl-license.html
* http://www.gnu.org/copyleft/gpl.html
*/
#include <linux/linkage.h>
#include <linux/init.h>
#include <asm/asm-offsets.h>
#include <asm/hardware/cache-l2x0.h>
#include <asm/smp_scu.h>
#define SCU_CPU_STATUS 0x08
.section ".text.head", "ax"
.extern imx_scu_base
#ifdef CONFIG_SMP
diag_reg_offset:
.word g_diag_reg - .
.macro set_diag_reg
adr r0, diag_reg_offset
ldr r1, [r0]
add r1, r1, r0 @ r1 = physical &g_diag_reg
ldr r0, [r1]
mcr p15, 0, r0, c15, c0, 1 @ write diagnostic register
.endm
ENTRY(v7_secondary_startup)
bl v7_invalidate_l1
set_diag_reg
/* Set the CPU status in SCU CPU status register. */
mrc p15, 0, r0, c0, c0, 5
and r0, r0, #3
mrc p15, 4, r1, c15, c0, 0
ldr r2, =SCU_CPU_STATUS
orr r2, r2, r0
ldr r0, =SCU_PM_NORMAL
strb r0, [r1, r2]
b secondary_startup
ENDPROC(v7_secondary_startup)
#endif
#ifdef CONFIG_ARM_CPU_SUSPEND
/*
* The following code must assume it is running from physical address
* where absolute virtual addresses to the data section have to be
* turned into relative ones.
*/
#ifdef CONFIG_CACHE_L2X0
.macro pl310_resume
adr r0, l2x0_saved_regs_offset
ldr r2, [r0]
add r2, r2, r0
ldr r0, [r2, #L2X0_R_PHY_BASE] @ get physical base of l2x0
ldr r1, [r2, #L2X0_R_AUX_CTRL] @ get aux_ctrl value
str r1, [r0, #L2X0_AUX_CTRL] @ restore aux_ctrl
ldr r1, [r2, #L2X0_R_TAG_LATENCY] @ get tag latency value
str r1, [r0, #L2X0_TAG_LATENCY_CTRL] @ restore tag latency
ldr r1, [r2, #L2X0_R_DATA_LATENCY] @ get data latency value
str r1, [r0, #L2X0_DATA_LATENCY_CTRL] @ restore data latency
mov r1, #0x1
str r1, [r0, #L2X0_CTRL] @ re-enable L2
.endm
l2x0_saved_regs_offset:
.word l2x0_saved_regs - .
#else
.macro pl310_resume
.endm
#endif
#endif
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