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meson-gx: reserved memory regions

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The Odroid C2 has two GiB of memory with two reserved regions.
reg = <0x0 0x0 0x0 0x1000000>;
reg = <0x0 0x10000000 0x0 0x200000>;

Patch
bfcef28ae4 (arm: add initial support for Amlogic Meson and
ODROID-C2) provided function dram_init_banksize to reserve the
first 16 MiB of RAM for firmware in function dram_init_banksize
in arch/arm/mach-meson/board.c and defined
CONFIG_NR_DRAM_BANKS = 1.

With this patch dram_init_banksize is changed to additionally
reserve the 2MiB region for the ARM Trusted Firmware (BL31).
CONFIG_NR_DRAM_BANKS is set to 2.

Cc: Andreas Färber <afaerber@suse.de>
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
xypron.glpk@gmx.de 2017-06-09 22:13:59 +02:00 committed by Tom Rini
parent 9d364af23e
commit e42f096f78
2 changed files with 6 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
arch/arm/mach-meson/board.c
View File

@ -37,9 +37,11 @@ int dram_init(void)
int dram_init_banksize(void)
{
/* Reserve first 16 MiB of RAM for firmware */
gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE + (16 * 1024 * 1024);
gd->bd->bi_dram[0].size = gd->ram_size - (16 * 1024 * 1024);
gd->bd->bi_dram[0].start = 0x1000000;
gd->bd->bi_dram[0].size = 0xf000000;
/* Reserve 2 MiB for ARM Trusted Firmware (BL31) */
gd->bd->bi_dram[1].start = 0x10000000;
gd->bd->bi_dram[1].size = gd->ram_size - 0x10200000;
return 0;
}

2
include/configs/meson-gxbb-common.h
View File

@ -10,7 +10,7 @@
#define CONFIG_CPU_ARMV8
#define CONFIG_REMAKE_ELF
#define CONFIG_NR_DRAM_BANKS 1
#define CONFIG_NR_DRAM_BANKS 2
#define CONFIG_ENV_IS_NOWHERE 1
#define CONFIG_ENV_SIZE 0x2000
#define CONFIG_SYS_MAXARGS 32