mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-25 12:33:41 +00:00
1a4596601f
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
77 lines
2.5 KiB
ArmAsm
77 lines
2.5 KiB
ArmAsm
/*
|
|
* (C) Copyright 2009 Magnus Lilja <lilja.magnus@gmail.com>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <config.h>
|
|
#include <asm/arch/imx-regs.h>
|
|
#include <asm/macro.h>
|
|
|
|
.globl lowlevel_init
|
|
lowlevel_init:
|
|
/* Also setup the Peripheral Port Remap register inside the core */
|
|
ldr r0, =ARM_PPMRR /* start from AIPS 2GB region */
|
|
mcr p15, 0, r0, c15, c2, 4
|
|
|
|
write32 IPU_CONF, IPU_CONF_DI_EN
|
|
write32 CCM_CCMR, CCM_CCMR_SETUP
|
|
|
|
wait_timer 0x40000
|
|
|
|
write32 CCM_CCMR, CCM_CCMR_SETUP | CCMR_MPE
|
|
write32 CCM_CCMR, (CCM_CCMR_SETUP | CCMR_MPE) & ~CCMR_MDS
|
|
|
|
/* Set up clock to 532MHz */
|
|
write32 CCM_PDR0, CCM_PDR0_SETUP_532MHZ
|
|
write32 CCM_MPCTL, CCM_MPCTL_SETUP_532MHZ
|
|
|
|
write32 CCM_SPCTL, PLL_PD(1) | PLL_MFD(4) | PLL_MFI(12) | PLL_MFN(1)
|
|
|
|
/* Set up MX31 DDR pins */
|
|
write32 IOMUXC_SW_PAD_CTL_SDCKE1_SDCLK_SDCLK_B, 0
|
|
write32 IOMUXC_SW_PAD_CTL_CAS_SDWE_SDCKE0, 0
|
|
write32 IOMUXC_SW_PAD_CTL_BCLK_RW_RAS, 0
|
|
write32 IOMUXC_SW_PAD_CTL_CS2_CS3_CS4, 0x1000
|
|
write32 IOMUXC_SW_PAD_CTL_DQM3_EB0_EB1, 0
|
|
write32 IOMUXC_SW_PAD_CTL_DQM0_DQM1_DQM2, 0
|
|
write32 IOMUXC_SW_PAD_CTL_SD29_SD30_SD31, 0
|
|
write32 IOMUXC_SW_PAD_CTL_SD26_SD27_SD28, 0
|
|
write32 IOMUXC_SW_PAD_CTL_SD23_SD24_SD25, 0
|
|
write32 IOMUXC_SW_PAD_CTL_SD20_SD21_SD22, 0
|
|
write32 IOMUXC_SW_PAD_CTL_SD17_SD18_SD19, 0
|
|
write32 IOMUXC_SW_PAD_CTL_SD14_SD15_SD16, 0
|
|
write32 IOMUXC_SW_PAD_CTL_SD11_SD12_SD13, 0
|
|
write32 IOMUXC_SW_PAD_CTL_SD8_SD9_SD10, 0
|
|
write32 IOMUXC_SW_PAD_CTL_SD5_SD6_SD7, 0
|
|
write32 IOMUXC_SW_PAD_CTL_SD2_SD3_SD4, 0
|
|
write32 IOMUXC_SW_PAD_CTL_SDBA0_SD0_SD1, 0
|
|
write32 IOMUXC_SW_PAD_CTL_A24_A25_SDBA1, 0
|
|
write32 IOMUXC_SW_PAD_CTL_A21_A22_A23, 0
|
|
write32 IOMUXC_SW_PAD_CTL_A18_A19_A20, 0
|
|
write32 IOMUXC_SW_PAD_CTL_A15_A16_A17, 0
|
|
write32 IOMUXC_SW_PAD_CTL_A12_A13_A14, 0
|
|
write32 IOMUXC_SW_PAD_CTL_A10_MA10_A11, 0
|
|
write32 IOMUXC_SW_PAD_CTL_A7_A8_A9, 0
|
|
write32 IOMUXC_SW_PAD_CTL_A4_A5_A6, 0
|
|
write32 IOMUXC_SW_PAD_CTL_A1_A2_A3, 0
|
|
write32 IOMUXC_SW_PAD_CTL_VPG0_VPG1_A0, 0
|
|
|
|
/* Set up MX31 DDR Memory Controller */
|
|
write32 WEIM_ESDMISC, ESDMISC_MDDR_SETUP
|
|
write32 WEIM_ESDCFG0, ESDCFG0_MDDR_SETUP
|
|
|
|
/* Perform DDR init sequence */
|
|
write32 WEIM_ESDCTL0, ESDCTL_PRECHARGE
|
|
write32 CSD0_BASE | 0x0f00, 0x12344321
|
|
write32 WEIM_ESDCTL0, ESDCTL_AUTOREFRESH
|
|
write32 CSD0_BASE, 0x12344321
|
|
write32 CSD0_BASE, 0x12344321
|
|
write32 WEIM_ESDCTL0, ESDCTL_LOADMODEREG
|
|
write8 CSD0_BASE | 0x00000033, 0xda
|
|
write8 CSD0_BASE | 0x01000000, 0xff
|
|
write32 WEIM_ESDCTL0, ESDCTL_RW
|
|
write32 CSD0_BASE, 0xDEADBEEF
|
|
write32 WEIM_ESDMISC, ESDMISC_MDDR_RESET_DL
|
|
|
|
mov pc, lr
|