From b2d5ac59859fa946e47fb6ab1f4f3486d4988680 Mon Sep 17 00:00:00 2001 From: Scott Wood Date: Tue, 24 Mar 2015 13:25:02 -0700 Subject: armv8/ls2085aqds: NAND boot support This adds NAND boot support for LS2085AQDS, using SPL framework. Details of forming NAND image can be found in README. Signed-off-by: Scott Wood [York Sun: Remove +S from defconfig after commit 252ed872] Signed-off-by: York Sun --- arch/arm/Kconfig | 1 + arch/arm/cpu/armv8/fsl-lsch3/README | 38 ++++++++++++++ arch/arm/cpu/armv8/fsl-lsch3/soc.c | 48 +++++++++++++++++ arch/arm/cpu/armv8/u-boot-spl.lds | 77 ++++++++++++++++++++++++++++ arch/arm/include/asm/arch-fsl-lsch3/config.h | 9 ++++ arch/arm/lib/crt0_64.S | 7 +++ 6 files changed, 180 insertions(+) create mode 100644 arch/arm/cpu/armv8/u-boot-spl.lds (limited to 'arch/arm') diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 3d0828d..4b7761d 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -715,6 +715,7 @@ config TARGET_LS2085AQDS bool "Support ls2085aqds" select ARM64 select ARMV8_MULTIENTRY + select SUPPORT_SPL help Support for Freescale LS2085AQDS platform The LS2085A Development System (QDS) is a high-performance diff --git a/arch/arm/cpu/armv8/fsl-lsch3/README b/arch/arm/cpu/armv8/fsl-lsch3/README index 4f36e2a..15a1549 100644 --- a/arch/arm/cpu/armv8/fsl-lsch3/README +++ b/arch/arm/cpu/armv8/fsl-lsch3/README @@ -95,3 +95,41 @@ mcboottimeout: MC boot timeout in milliseconds. If this variable is not defined mcmemsize: MC DRAM block size. If this variable is not defined, the value CONFIG_SYS_LS_MC_DRAM_BLOCK_MIN_SIZE will be assumed. + +Booting from NAND +------------------- +Booting from NAND requires two images, RCW and u-boot-with-spl.bin. +The difference between NAND boot RCW image and NOR boot image is the PBI +command sequence. Below is one example for PBI commands for QDS which uses +NAND device with 2KB/page, block size 128KB. + +1) CCSR 4-byte write to 0x00e00404, data=0x00000000 +2) CCSR 4-byte write to 0x00e00400, data=0x1800a000 +The above two commands set bootloc register to 0x00000000_1800a000 where +the u-boot code will be running in OCRAM. + +3) Block Copy: SRC=0x0107, SRC_ADDR=0x00020000, DEST_ADDR=0x1800a000, +BLOCK_SIZE=0x00014000 +This command copies u-boot image from NAND device into OCRAM. The values need +to adjust accordingly. + +SRC should match the cfg_rcw_src, the reset config pins. It depends + on the NAND device. See reference manual for cfg_rcw_src. +SRC_ADDR is the offset of u-boot-with-spl.bin image in NAND device. In + the example above, 128KB. For easy maintenance, we put it at + the beginning of next block from RCW. +DEST_ADDR is fixed at 0x1800a000, matching bootloc set above. +BLOCK_SIZE is the size to be copied by PBI. + +RCW image should be written to the beginning of NAND device. Example of using +u-boot command + +nand write 0 + +To form the NAND image, build u-boot with NAND config, for example, +ls2085aqds_nand_defconfig. The image needed is u-boot-with-spl.bin. +The u-boot image should be written to match SRC_ADDR, in above example 0x20000. + +nand write 200000 + +With these two images in NAND device, the board can boot from NAND. diff --git a/arch/arm/cpu/armv8/fsl-lsch3/soc.c b/arch/arm/cpu/armv8/fsl-lsch3/soc.c index 17700ef..ca00108 100644 --- a/arch/arm/cpu/armv8/fsl-lsch3/soc.c +++ b/arch/arm/cpu/armv8/fsl-lsch3/soc.c @@ -6,8 +6,13 @@ #include #include +#include +#include #include #include +#include + +DECLARE_GLOBAL_DATA_PTR; static void erratum_a008751(void) { @@ -18,8 +23,51 @@ static void erratum_a008751(void) #endif } +static void erratum_rcw_src(void) +{ +#if defined(CONFIG_SPL) + u32 __iomem *dcfg_ccsr = (u32 __iomem *)DCFG_BASE; + u32 __iomem *dcfg_dcsr = (u32 __iomem *)DCFG_DCSR_BASE; + u32 val; + + val = in_le32(dcfg_ccsr + DCFG_PORSR1 / 4); + val &= ~DCFG_PORSR1_RCW_SRC; + val |= DCFG_PORSR1_RCW_SRC_NOR; + out_le32(dcfg_dcsr + DCFG_DCSR_PORCR1 / 4, val); +#endif +} + void fsl_lsch3_early_init_f(void) { erratum_a008751(); + erratum_rcw_src(); init_early_memctl_regs(); /* tighten IFC timing */ } + +#ifdef CONFIG_SPL_BUILD +void board_init_f(ulong dummy) +{ + /* Clear global data */ + memset((void *)gd, 0, sizeof(gd_t)); + + arch_cpu_init(); + board_early_init_f(); + timer_init(); + env_init(); + gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE); + + serial_init(); + console_init_f(); + dram_init(); + + /* Clear the BSS. */ + memset(__bss_start, 0, __bss_end - __bss_start); + + board_init_r(NULL, 0); +} + +u32 spl_boot_device(void) +{ + return BOOT_DEVICE_NAND; +} +#endif diff --git a/arch/arm/cpu/armv8/u-boot-spl.lds b/arch/arm/cpu/armv8/u-boot-spl.lds new file mode 100644 index 0000000..4df339c --- /dev/null +++ b/arch/arm/cpu/armv8/u-boot-spl.lds @@ -0,0 +1,77 @@ +/* + * (C) Copyright 2013 + * David Feng + * + * (C) Copyright 2002 + * Gary Jennejohn, DENX Software Engineering, + * + * (C) Copyright 2010 + * Texas Instruments, + * Aneesh V + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +MEMORY { .sram : ORIGIN = CONFIG_SPL_TEXT_BASE, + LENGTH = CONFIG_SPL_MAX_SIZE } +MEMORY { .sdram : ORIGIN = CONFIG_SPL_BSS_START_ADDR, + LENGTH = CONFIG_SPL_BSS_MAX_SIZE } + +OUTPUT_FORMAT("elf64-littleaarch64", "elf64-littleaarch64", "elf64-littleaarch64") +OUTPUT_ARCH(aarch64) +ENTRY(_start) +SECTIONS +{ + .text : { + . = ALIGN(8); + *(.__image_copy_start) + CPUDIR/start.o (.text*) + *(.text*) + } >.sram + + .rodata : { + . = ALIGN(8); + *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) + } >.sram + + .data : { + . = ALIGN(8); + *(.data*) + } >.sram + + .u_boot_list : { + . = ALIGN(8); + KEEP(*(SORT(.u_boot_list*))); + } >.sram + + .image_copy_end : { + . = ALIGN(8); + *(.__image_copy_end) + } >.sram + + .end : { + . = ALIGN(8); + *(.__end) + } >.sram + + .bss_start : { + . = ALIGN(8); + KEEP(*(.__bss_start)); + } >.sdram + + .bss : { + *(.bss*) + . = ALIGN(8); + } >.sdram + + .bss_end : { + KEEP(*(.__bss_end)); + } >.sdram + + /DISCARD/ : { *(.dynsym) } + /DISCARD/ : { *(.dynstr*) } + /DISCARD/ : { *(.dynamic*) } + /DISCARD/ : { *(.plt*) } + /DISCARD/ : { *(.interp*) } + /DISCARD/ : { *(.gnu*) } +} diff --git a/arch/arm/include/asm/arch-fsl-lsch3/config.h b/arch/arm/include/asm/arch-fsl-lsch3/config.h index 403b2ef..77c20ab 100644 --- a/arch/arm/include/asm/arch-fsl-lsch3/config.h +++ b/arch/arm/include/asm/arch-fsl-lsch3/config.h @@ -130,6 +130,15 @@ #define CCI_MN_DVM_DOMAIN_CTL 0x200 #define CCI_MN_DVM_DOMAIN_CTL_SET 0x210 +/* Device Configuration */ +#define DCFG_BASE 0x01e00000 +#define DCFG_PORSR1 0x000 +#define DCFG_PORSR1_RCW_SRC 0xff800000 +#define DCFG_PORSR1_RCW_SRC_NOR 0x12f00000 + +#define DCFG_DCSR_BASE 0X700100000ULL +#define DCFG_DCSR_PORCR1 0x000 + /* Supplemental Configuration */ #define SCFG_BASE 0x01fc0000 #define SCFG_USB3PRM1CR 0x000 diff --git a/arch/arm/lib/crt0_64.S b/arch/arm/lib/crt0_64.S index 1654011..bc9c53c 100644 --- a/arch/arm/lib/crt0_64.S +++ b/arch/arm/lib/crt0_64.S @@ -61,7 +61,11 @@ ENTRY(_main) /* * Set up initial C runtime environment and call board_init_f(0). */ +#if defined(CONFIG_SPL_BUILD) && defined(CONFIG_SPL_STACK) + ldr x0, =(CONFIG_SPL_STACK) +#else ldr x0, =(CONFIG_SYS_INIT_SP_ADDR) +#endif sub x18, x0, #GD_SIZE /* allocate one GD above SP */ bic x18, x18, #0x7 /* 8-byte alignment for GD */ zero_gd: @@ -77,6 +81,7 @@ zero_gd: mov x0, #0 bl board_init_f +#if !defined(CONFIG_SPL_BUILD) /* * Set up intermediate environment (new sp and gd) and call * relocate_code(addr_moni). Trick here is that we'll return @@ -119,4 +124,6 @@ clear_loop: /* NOTREACHED - board_init_r() does not return */ +#endif /* !CONFIG_SPL_BUILD */ + ENDPROC(_main) -- cgit v1.1