diff options
author | Patrick Bruenn <p.bruenn@beckhoff.com> | 2018-01-16 09:59:02 +0300 |
---|---|---|
committer | Stefano Babic <sbabic@denx.de> | 2018-02-04 14:00:58 +0300 |
commit | daebb796ff5a91f3185c7653abcb97c3a0a228f3 (patch) | |
tree | f21009217f1d66a769caae4204d1f11e7ff3ea55 /arch | |
parent | a75a3ef3059bef48529d5bede93da671ea0376bb (diff) | |
download | u-boot-daebb796ff5a91f3185c7653abcb97c3a0a228f3.tar.xz |
arm: imx: cx9020: move dram init into common place
Move dram_init(), dram_init_banksize() and get_effective_memsize() to
arch/arm/mach-imx/mx5/mx53_dram.c, where it can be reused by m53evk and
mx53loco.
Signed-off-by: Patrick Bruenn <p.bruenn@beckhoff.com>
Diffstat (limited to 'arch')
-rw-r--r-- | arch/arm/mach-imx/mx5/Makefile | 3 | ||||
-rw-r--r-- | arch/arm/mach-imx/mx5/mx53_dram.c | 45 |
2 files changed, 48 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/mx5/Makefile b/arch/arm/mach-imx/mx5/Makefile index d021842f68..368cfde98b 100644 --- a/arch/arm/mach-imx/mx5/Makefile +++ b/arch/arm/mach-imx/mx5/Makefile @@ -9,3 +9,6 @@ obj-y := soc.o clock.o obj-y += lowlevel_init.o + +# common files for mx53 dram initialization +obj-$(CONFIG_TARGET_MX53CX9020) += mx53_dram.o diff --git a/arch/arm/mach-imx/mx5/mx53_dram.c b/arch/arm/mach-imx/mx5/mx53_dram.c new file mode 100644 index 0000000000..7e5fc42d1f --- /dev/null +++ b/arch/arm/mach-imx/mx5/mx53_dram.c @@ -0,0 +1,45 @@ +/* + * Copyright (C) 2017 Beckhoff Automation GmbH & Co. KG + * Patrick Bruenn <p.bruenn@beckhoff.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> + +DECLARE_GLOBAL_DATA_PTR; + +phys_size_t get_effective_memsize(void) +{ + /* + * WARNING: We must override get_effective_memsize() function here + * to report only the size of the first DRAM bank. This is to make + * U-Boot relocator place U-Boot into valid memory, that is, at the + * end of the first DRAM bank. If we did not override this function + * like so, U-Boot would be placed at the address of the first DRAM + * bank + total DRAM size - sizeof(uboot), which in the setup where + * each DRAM bank contains 512MiB of DRAM would result in placing + * U-Boot into invalid memory area close to the end of the first + * DRAM bank. + */ + return get_ram_size((void *)PHYS_SDRAM_1, 1 << 30); +} + +int dram_init(void) +{ + gd->ram_size = get_ram_size((void *)PHYS_SDRAM_1, 1 << 30); + gd->ram_size += get_ram_size((void *)PHYS_SDRAM_2, 1 << 30); + + return 0; +} + +int dram_init_banksize(void) +{ + gd->bd->bi_dram[0].start = PHYS_SDRAM_1; + gd->bd->bi_dram[0].size = get_ram_size((void *)PHYS_SDRAM_1, 1 << 30); + + gd->bd->bi_dram[1].start = PHYS_SDRAM_2; + gd->bd->bi_dram[1].size = get_ram_size((void *)PHYS_SDRAM_2, 1 << 30); + + return 0; +} |