diff options
Diffstat (limited to 'arch/arm/cpu/armv7/uniphier/lowlevel_init.S')
| -rw-r--r-- | arch/arm/cpu/armv7/uniphier/lowlevel_init.S | 163 |
1 files changed, 0 insertions, 163 deletions
diff --git a/arch/arm/cpu/armv7/uniphier/lowlevel_init.S b/arch/arm/cpu/armv7/uniphier/lowlevel_init.S deleted file mode 100644 index c208ab67a1..0000000000 --- a/arch/arm/cpu/armv7/uniphier/lowlevel_init.S +++ /dev/null @@ -1,163 +0,0 @@ -/* - * Copyright (C) 2012-2014 Panasonic Corporation - * Author: Masahiro Yamada <yamada.m@jp.panasonic.com> - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <config.h> -#include <linux/linkage.h> -#include <asm/system.h> -#include <asm/arch/led.h> -#include <asm/arch/arm-mpcore.h> -#include <asm/arch/sbc-regs.h> - -ENTRY(lowlevel_init) - mov r8, lr @ persevere link reg across call - - /* - * The UniPhier Boot ROM loads SPL code to the L2 cache. - * But CPUs can only do instruction fetch now because start.S has - * cleared C and M bits. - * First we need to turn on MMU and Dcache again to get back - * data access to L2. - */ - mrc p15, 0, r0, c1, c0, 0 @ SCTLR (System Contrl Register) - orr r0, r0, #(CR_C | CR_M) @ enable MMU and Dcache - mcr p15, 0, r0, c1, c0, 0 - -#ifdef CONFIG_DEBUG_LL - bl setup_lowlevel_debug -#endif - - /* - * Now we are using the page table embedded in the Boot ROM. - * It is not handy since it is not a straight mapped table for sLD3. - * What we need to do next is to switch over to the page table in SPL. - */ - ldr r3, =init_page_table @ page table must be 16KB aligned - - /* Disable MMU and Dcache before switching Page Table */ - mrc p15, 0, r0, c1, c0, 0 @ SCTLR (System Contrl Register) - bic r0, r0, #(CR_C | CR_M) @ disable MMU and Dcache - mcr p15, 0, r0, c1, c0, 0 - - bl enable_mmu - -#ifdef CONFIG_UNIPHIER_SMP - /* - * ACTLR (Auxiliary Control Register) for Cortex-A9 - * bit[9] Parity on - * bit[8] Alloc in one way - * bit[7] EXCL (Exclusive cache bit) - * bit[6] SMP - * bit[3] Write full line of zeros mode - * bit[2] L1 Prefetch enable - * bit[1] L2 prefetch enable - * bit[0] FW (Cache and TLB maintenance broadcast) - */ - mrc p15, 0, r0, c1, c0, 1 @ ACTLR (Auxiliary Control Register) - orr r0, r0, #0x41 @ enable SMP, FW bit - mcr p15, 0, r0, c1, c0, 1 - - /* branch by CPU ID */ - mrc p15, 0, r0, c0, c0, 5 @ MPIDR (Multiprocessor Affinity Register) - and r0, r0, #0x3 - cmp r0, #0x0 - beq primary_cpu - ldr r1, =ROM_BOOT_ROMRSV2 - mov r0, #0 - str r0, [r1] -0: wfe - ldr r0, [r1] - cmp r0, #0 - beq 0b - bx r0 @ r0: entry point of U-Boot main for the secondary CPU -primary_cpu: - ldr r1, =ROM_BOOT_ROMRSV2 - ldr r0, =_start @ entry for the secondary CPU - str r0, [r1] - ldr r0, [r1] @ make sure str is complete before sev - sev @ kick the sedoncary CPU - mrc p15, 4, r1, c15, c0, 0 @ Configuration Base Address Register - bfc r1, #0, #13 @ clear bit 12-0 - mov r0, #-1 - str r0, [r1, #SCU_INV_ALL] @ SCU Invalidate All Register - mov r0, #1 @ SCU enable - str r0, [r1, #SCU_CTRL] @ SCU Control Register -#endif - - bl setup_init_ram @ RAM area for temporary stack pointer - - mov lr, r8 @ restore link - mov pc, lr @ back to my caller -ENDPROC(lowlevel_init) - -ENTRY(enable_mmu) - mrc p15, 0, r0, c2, c0, 2 @ TTBCR (Translation Table Base Control Register) - bic r0, r0, #0x37 - orr r0, r0, #0x20 @ disable TTBR1 - mcr p15, 0, r0, c2, c0, 2 - - orr r0, r3, #0x8 @ Outer Cacheability for table walks: WBWA - mcr p15, 0, r0, c2, c0, 0 @ TTBR0 - - mov r0, #0 - mcr p15, 0, r0, c8, c7, 0 @ invalidate TLBs - - mov r0, #-1 @ manager for all domains (No permission check) - mcr p15, 0, r0, c3, c0, 0 @ DACR (Domain Access Control Register) - - dsb - isb - /* - * MMU on: - * TLBs was already invalidated in "../start.S" - * So, we don't need to invalidate it here. - */ - mrc p15, 0, r0, c1, c0, 0 @ SCTLR (System Contrl Register) - orr r0, r0, #(CR_C | CR_M) @ MMU and Dcache enable - mcr p15, 0, r0, c1, c0, 0 - - mov pc, lr -ENDPROC(enable_mmu) - -#include <asm/arch/ssc-regs.h> - -#define BOOT_RAM_SIZE (SSC_WAY_SIZE) -#define BOOT_WAY_BITS (0x00000100) /* way 8 */ - -ENTRY(setup_init_ram) - /* - * Touch to zero for the boot way - */ -0: - /* - * set SSCOQM, SSCOQAD, SSCOQSZ, SSCOQWN in this order - */ - ldr r0, = 0x00408006 @ touch to zero with address range - ldr r1, = SSCOQM - str r0, [r1] - ldr r0, = (CONFIG_SYS_INIT_SP_ADDR - BOOT_RAM_SIZE) @ base address - ldr r1, = SSCOQAD - str r0, [r1] - ldr r0, = BOOT_RAM_SIZE - ldr r1, = SSCOQSZ - str r0, [r1] - ldr r0, = BOOT_WAY_BITS - ldr r1, = SSCOQWN - str r0, [r1] - ldr r1, = SSCOPPQSEF - ldr r0, [r1] - cmp r0, #0 @ check if the command is successfully set - bne 0b @ try again if an error occurres - - ldr r1, = SSCOLPQS -1: - ldr r0, [r1] - cmp r0, #0x4 - bne 1b @ wait until the operation is completed - str r0, [r1] @ clear the complete notification flag - - mov pc, lr -ENDPROC(setup_init_ram) |
