diff options
Diffstat (limited to 'board/armadeus/apf27/lowlevel_init.S')
| -rw-r--r-- | board/armadeus/apf27/lowlevel_init.S | 166 |
1 files changed, 0 insertions, 166 deletions
diff --git a/board/armadeus/apf27/lowlevel_init.S b/board/armadeus/apf27/lowlevel_init.S deleted file mode 100644 index 0991b7ddf4..0000000000 --- a/board/armadeus/apf27/lowlevel_init.S +++ /dev/null @@ -1,166 +0,0 @@ -/* SPDX-License-Identifier: GPL-2.0+ */ -/* - * (C) Copyright 2013 Philippe Reynes <tremyfr@yahoo.fr> - */ - -#include <config.h> -#include <generated/asm-offsets.h> -#include <asm/macro.h> -#include <asm/arch/imx-regs.h> -#include "apf27.h" - - .macro init_aipi - /* - * setup AIPI1 and AIPI2 - */ - write32 AIPI1_PSR0, ACFG_AIPI1_PSR0_VAL - write32 AIPI1_PSR1, ACFG_AIPI1_PSR1_VAL - write32 AIPI2_PSR0, ACFG_AIPI2_PSR0_VAL - write32 AIPI2_PSR1, ACFG_AIPI2_PSR1_VAL - - /* Change SDRAM signal strengh */ - ldr r0, =GPCR - ldr r1, =ACFG_GPCR_VAL - ldr r5, [r0] - orr r5, r5, r1 - str r5, [r0] - - .endm /* init_aipi */ - - .macro init_clock - ldr r0, =CSCR - /* disable MPLL/SPLL first */ - ldr r1, [r0] - bic r1, r1, #(CSCR_MPEN|CSCR_SPEN) - str r1, [r0] - - /* - * pll clock initialization predefined in apf27.h - */ - write32 MPCTL0, ACFG_MPCTL0_VAL - write32 SPCTL0, ACFG_SPCTL0_VAL - - write32 CSCR, ACFG_CSCR_VAL|CSCR_MPLL_RESTART|CSCR_SPLL_RESTART - - /* - * add some delay here - */ - mov r1, #0x1000 - 1: subs r1, r1, #0x1 - bne 1b - - /* peripheral clock divider */ - write32 PCDR0, ACFG_PCDR0_VAL - write32 PCDR1, ACFG_PCDR1_VAL - - /* Configure PCCR0 and PCCR1 */ - write32 PCCR0, ACFG_PCCR0_VAL - write32 PCCR1, ACFG_PCCR1_VAL - - .endm /* init_clock */ - - .macro init_ddr - /* wait for SDRAM/LPDDR ready (SDRAMRDY) */ - ldr r0, =IMX_ESD_BASE - ldr r4, =ESDMISC_SDRAM_RDY -2: ldr r1, [r0, #ESDMISC_ROF] - ands r1, r1, r4 - bpl 2b - - /* LPDDR Soft Reset Mobile/Low Power DDR SDRAM. */ - ldr r0, =IMX_ESD_BASE - ldr r4, =ACFG_ESDMISC_VAL - orr r1, r4, #ESDMISC_MDDR_DL_RST - str r1, [r0, #ESDMISC_ROF] - - /* Hold for more than 200ns */ - ldr r1, =0x10000 -1: subs r1, r1, #0x1 - bne 1b - - str r4, [r0] - - ldr r0, =IMX_ESD_BASE - ldr r1, =ACFG_SDRAM_ESDCFG_REGISTER_VAL - str r1, [r0, #ESDCFG0_ROF] - - ldr r0, =IMX_ESD_BASE - ldr r1, =ACFG_PRECHARGE_CMD - str r1, [r0, #ESDCTL0_ROF] - - /* write8(0xA0001000, any value) */ - ldr r1, =PHYS_SDRAM_1+ACFG_SDRAM_PRECHARGE_ALL_VAL - strb r2, [r1] - - ldr r1, =ACFG_AUTOREFRESH_CMD - str r1, [r0, #ESDCTL0_ROF] - - ldr r4, =PHYS_SDRAM_1 /* CSD0 base address */ - - ldr r6,=0x7 /* load loop counter */ -1: str r5,[r4] /* run auto-refresh cycle to array 0 */ - subs r6,r6,#1 - bne 1b - - ldr r1, =ACFG_SET_MODE_REG_CMD - str r1, [r0, #ESDCTL0_ROF] - - /* set standard mode register */ - ldr r4, = PHYS_SDRAM_1+ACFG_SDRAM_MODE_REGISTER_VAL - strb r2, [r4] - - /* set extended mode register */ - ldr r4, =PHYS_SDRAM_1+ACFG_SDRAM_EXT_MODE_REGISTER_VAL - strb r5, [r4] - - ldr r1, =ACFG_NORMAL_RW_CMD - str r1, [r0, #ESDCTL0_ROF] - - /* 2nd sdram */ - ldr r0, =IMX_ESD_BASE - ldr r1, =ACFG_SDRAM_ESDCFG_REGISTER_VAL - str r1, [r0, #ESDCFG1_ROF] - - ldr r0, =IMX_ESD_BASE - ldr r1, =ACFG_PRECHARGE_CMD - str r1, [r0, #ESDCTL1_ROF] - - /* write8(0xB0001000, any value) */ - ldr r1, =PHYS_SDRAM_2+ACFG_SDRAM_PRECHARGE_ALL_VAL - strb r2, [r1] - - ldr r1, =ACFG_AUTOREFRESH_CMD - str r1, [r0, #ESDCTL1_ROF] - - ldr r4, =PHYS_SDRAM_2 /* CSD1 base address */ - - ldr r6,=0x7 /* load loop counter */ -1: str r5,[r4] /* run auto-refresh cycle to array 0 */ - subs r6,r6,#1 - bne 1b - - ldr r1, =ACFG_SET_MODE_REG_CMD - str r1, [r0, #ESDCTL1_ROF] - - /* set standard mode register */ - ldr r4, =PHYS_SDRAM_2+ACFG_SDRAM_MODE_REGISTER_VAL - strb r2, [r4] - - /* set extended mode register */ - ldr r4, =PHYS_SDRAM_2+ACFG_SDRAM_EXT_MODE_REGISTER_VAL - strb r2, [r4] - - ldr r1, =ACFG_NORMAL_RW_CMD - str r1, [r0, #ESDCTL1_ROF] - .endm /* init_ddr */ - -.globl lowlevel_init -lowlevel_init: - - init_aipi - init_clock -#ifdef CONFIG_SPL_BUILD - init_ddr -#endif - - mov pc, lr |