diff options
Diffstat (limited to 'arch/arm/boards/freescale-mx25-3ds/lowlevel_init.S')
| -rw-r--r-- | arch/arm/boards/freescale-mx25-3ds/lowlevel_init.S | 229 |
1 files changed, 0 insertions, 229 deletions
diff --git a/arch/arm/boards/freescale-mx25-3ds/lowlevel_init.S b/arch/arm/boards/freescale-mx25-3ds/lowlevel_init.S deleted file mode 100644 index bf3830d8d6..0000000000 --- a/arch/arm/boards/freescale-mx25-3ds/lowlevel_init.S +++ /dev/null @@ -1,229 +0,0 @@ -/* - * - * (c) 2007 Pengutronix, Sascha Hauer <s.hauer@pengutronix.de> - * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - */ - -#include <linux/sizes.h> -#include <asm-generic/memory_layout.h> -#include <mach/imx25-regs.h> -#include <mach/imx-pll.h> -#include <mach/esdctl.h> -#include <asm/barebox-arm-head.h> - -#define writel(val, reg) \ - ldr r0, =reg; \ - ldr r1, =val; \ - str r1, [r0]; - -#define writeb(val, reg) \ - ldr r0, =reg; \ - ldr r1, =val; \ - strb r1, [r0]; - -/* Assuming 24MHz input clock */ -#define MPCTL_PARAM_532_MX25 \ - (IMX_PLL_PD(1) | IMX_PLL_MFD(0) | IMX_PLL_MFI(11) | IMX_PLL_MFN(1)) - -.section ".text_bare_init","ax" - -ARM_PPMRR: .word 0x40000015 -L2CACHE_PARAM: .word 0x00030024 -CCM_CCMR_W: .word 0x003F4208 -CCM_PDR0_W: .word 0x00801000 -MPCTL_PARAM_399_W: .word MPCTL_PARAM_399 -MPCTL_PARAM_532_W: .word MPCTL_PARAM_532_MX25 -PPCTL_PARAM_W: .word PPCTL_PARAM_300 -CCM_BASE_ADDR_W: .word MX25_CCM_BASE_ADDR - -.globl barebox_arm_reset_vector -barebox_arm_reset_vector: - bl arm_cpu_lowlevel_init - -#define MX25_CCM_MCR 0x64 - - ldr r0, CCM_BASE_ADDR_W - /* default CLKO to 1/32 of the ARM core */ - ldr r1, [r0, #MX25_CCM_MCR] - bic r1, r1, #0x00F00000 - bic r1, r1, #0x7F000000 - mov r2, #0x5F000000 - add r2, r2, #0x00200000 - orr r1, r1, r2 - str r1, [r0, #MX25_CCM_MCR] - - /* enable all the clocks */ - writel(0x1FFFFFFF, MX25_CCM_BASE_ADDR + MX25_CCM_CGCR0) - writel(0xFFFFFFFF, MX25_CCM_BASE_ADDR + MX25_CCM_CGCR1) - writel(0x000FDFFF, MX25_CCM_BASE_ADDR + MX25_CCM_CGCR2) - writel(0x0000FEFF, MX25_CCM_BASE_ADDR + MX25_CCM_MCR) - - /* Setup a temporary stack in SRAM */ - ldr sp, =MX25_IRAM_BASE_ADDR + MX25_IRAM_SIZE - 4 - - /* Skip SDRAM initialization if we run from RAM */ - cmp pc, #0x80000000 - bls 1f - cmp pc, #0x90000000 - bhi 1f - - b imx25_barebox_entry - -1: - ldr r0, ESDCTL_BASE_W - mov r3, #0x2000 - str r3, [r0, #0x0] - str r3, [r0, #0x8] - - mov r12, #0x00 - mov r2, #0x1 /* mDDR */ - mov r1, #MX25_CSD0_BASE_ADDR - bl setup_sdram_bank -// cmp r3, #0x0 -// orreq r12, r12, #1 -// eorne r2, r2, #0x1 -// blne setup_sdram_bank - - ldr r3, ESDCTL_DELAY5 - str r3, [r0, #0x30] - -#ifdef CONFIG_ARCH_IMX_EXTERNAL_BOOT_NAND - - mov r0, #0 - b imx25_barebox_boot_nand_external -#endif /* CONFIG_ARCH_IMX_EXTERNAL_BOOT_NAND */ - -ret: - b imx25_barebox_entry - -/* - * r0: control base, r1: ram bank base - * r2: ddr type(0:DDR2, 1:MDDR) r3, r4: working - */ -setup_sdram_bank: - mov r3, #0xE /* 0xA + 0x4 */ - tst r2, #0x1 - orreq r3, r3, #0x300 /* DDR2 */ - str r3, [r0, #0x10] - bic r3, r3, #0x00A - str r3, [r0, #0x10] - beq 2f - - mov r3, #0x20000 -1: subs r3, r3, #1 - bne 1b - -2: adr r4, ESDCTL_CONFIG - tst r2, #0x1 - ldreq r3, [r4, #0x0] - ldrne r3, [r4, #0x4] - cmp r1, #MX25_CSD1_BASE_ADDR - strlo r3, [r0, #0x4] - strhs r3, [r0, #0xC] - - ldr r3, ESDCTL_0x92220000 - strlo r3, [r0, #0x0] - strhs r3, [r0, #0x8] - mov r3, #0xDA - ldr r4, RAM_PARAM1_MDDR - strb r3, [r1, r4] - - tst r2, #0x1 - bne skip_set_mode - - cmp r1, #MX25_CSD1_BASE_ADDR - ldr r3, ESDCTL_0xB2220000 - strlo r3, [r0, #0x0] - strhs r3, [r0, #0x8] - mov r3, #0xDA - ldr r4, RAM_PARAM4_MDDR - strb r3, [r1, r4] - ldr r4, RAM_PARAM5_MDDR - strb r3, [r1, r4] - ldr r4, RAM_PARAM3_MDDR - strb r3, [r1, r4] - ldr r4, RAM_PARAM2_MDDR - strb r3, [r1, r4] - - ldr r3, ESDCTL_0x92220000 - strlo r3, [r0, #0x0] - strhs r3, [r0, #0x8] - mov r3, #0xDA - ldr r4, RAM_PARAM1_MDDR - strb r3, [r1, r4] - -skip_set_mode: - cmp r1, #MX25_CSD1_BASE_ADDR - ldr r3, ESDCTL_0xA2220000 - strlo r3, [r0, #0x0] - strhs r3, [r0, #0x8] - mov r3, #0xDA - strb r3, [r1] - strb r3, [r1] - - ldr r3, ESDCTL_0xB2220000 - strlo r3, [r0, #0x0] - strhs r3, [r0, #0x8] - adr r4, RAM_PARAM6_MDDR - tst r2, #0x1 - ldreq r4, [r4, #0x0] - ldrne r4, [r4, #0x4] - mov r3, #0xDA - strb r3, [r1, r4] - ldreq r4, RAM_PARAM7_MDDR - streqb r3, [r1, r4] - adr r4, RAM_PARAM3_MDDR - ldreq r4, [r4, #0x0] - ldrne r4, [r4, #0x4] - strb r3, [r1, r4] - - cmp r1, #MX25_CSD1_BASE_ADDR - ldr r3, ESDCTL_0x82226080 - strlo r3, [r0, #0x0] - strhs r3, [r0, #0x8] - - tst r2, #0x1 - moveq r4, #0x20000 - movne r4, #0x200 -1: subs r4, r4, #1 - bne 1b - - str r3, [r1, #0x100] - ldr r4, [r1, #0x100] - cmp r3, r4 - movne r3, #1 - moveq r3, #0 - - mov pc, lr - -RAM_PARAM1_MDDR: .word 0x00000400 -RAM_PARAM2_MDDR: .word 0x00000333 -RAM_PARAM3_MDDR: .word 0x02000400 - .word 0x02000000 -RAM_PARAM4_MDDR: .word 0x04000000 -RAM_PARAM5_MDDR: .word 0x06000000 -RAM_PARAM6_MDDR: .word 0x00000233 - .word 0x00000033 -RAM_PARAM7_MDDR: .word 0x02000780 -ESDCTL_0x92220000: .word 0x92210000 -ESDCTL_0xA2220000: .word 0xA2210000 -ESDCTL_0xB2220000: .word 0xB2210000 -ESDCTL_0x82226080: .word 0x82216080 -ESDCTL_CONFIG: .word 0x007FFC3F - .word 0x007FFC3F -ESDCTL_DELAY5: .word 0x00F49F00 -ESDCTL_BASE_W: .word MX25_ESDCTL_BASE_ADDR - |