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rpi4: enable dram bank initialization

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When booting through the efi stub, the memory map get's created by
reading the dram bank information. Depending on the version of the RPi4
this information changes. Read the device tree to initialize the dram
bank data structure. This way the kernel is able to access the whole
range of available memory.

Signed-off-by: Matthias Brugger <mbrugger@suse.com>
This commit is contained in:
Matthias Brugger 2019-09-09 18:31:56 +02:00
parent 023ff4b88d
commit 9de5b89e4c
2 changed files with 11 additions and 1 deletions
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10
board/raspberrypi/rpi/rpi.c
View File

@ -312,6 +312,16 @@ int dram_init(void)
return 0;
}
#ifdef CONFIG_OF_BOARD
#ifdef CONFIG_BCM2711
int dram_init_banksize(void)
{
return fdtdec_decode_ram_size(gd->fdt_blob, NULL, 0, NULL,
(phys_size_t *)&gd->ram_size, gd->bd);
}
#endif
#endif
static void set_fdtfile(void)
{
const char *fdtfile;

2
configs/rpi_4_defconfig
View File

@ -3,7 +3,7 @@ CONFIG_ARCH_BCM283X=y
CONFIG_SYS_TEXT_BASE=0x00080000
CONFIG_TARGET_RPI_4=y
CONFIG_SYS_MALLOC_F_LEN=0x2000
CONFIG_NR_DRAM_BANKS=1
CONFIG_NR_DRAM_BANKS=2
CONFIG_DISTRO_DEFAULTS=y
CONFIG_OF_BOARD_SETUP=y
# CONFIG_ARCH_FIXUP_FDT_MEMORY is not set