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riscv: set fdtfile on VisionFive 2

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Multiple revisions of the StarFive VisionFive 2 board exist. They can be
identified by reading their EEPROM.

Linux uses two differently named device-tree files. To load the correct
device-tree we need to set $fdtfile to the device-tree file name that
matches the board revision.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
Tested-by: Milan P. Stanić <mps@arvanta.net>
This commit is contained in:
Heinrich Schuchardt 2023-09-07 13:21:28 +02:00 committed by Leo Yu-Chi Liang
parent 15155ab0a3
commit 16dbe3d9d4
2 changed files with 42 additions and 2 deletions
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1
arch/riscv/Kconfig
View File

@ -26,6 +26,7 @@ config TARGET_SIFIVE_UNMATCHED
config TARGET_STARFIVE_VISIONFIVE2
bool "Support StarFive VisionFive2 Board"
select BOARD_LATE_INIT
config TARGET_TH1520_LPI4A
bool "Support Sipeed's TH1520 Lichee PI 4A Board"

43
board/starfive/visionfive2/starfive_visionfive2.c
View File

@ -5,16 +5,22 @@
*/
#include <common.h>
#include <asm/io.h>
#include <asm/sections.h>
#include <cpu_func.h>
#include <dm.h>
#include <fdt_support.h>
#include <env.h>
#include <asm/arch/eeprom.h>
#include <asm/io.h>
#include <asm/sections.h>
#include <linux/bitops.h>
DECLARE_GLOBAL_DATA_PTR;
#define JH7110_L2_PREFETCHER_BASE_ADDR 0x2030000
#define JH7110_L2_PREFETCHER_HART_OFFSET 0x2000
#define FDTFILE_VISIONFIVE2_1_2A \
"starfive/jh7110-starfive-visionfive-2-v1.2a.dtb"
#define FDTFILE_VISIONFIVE2_1_3B \
"starfive/jh7110-starfive-visionfive-2-v1.3b.dtb"
/* enable U74-mc hart1~hart4 prefetcher */
static void enable_prefetcher(void)
@ -35,6 +41,31 @@ static void enable_prefetcher(void)
}
}
/**
* set_fdtfile() - set the $fdtfile variable based on the board revision
*/
static void set_fdtfile(void)
{
u8 version;
const char *fdtfile;
version = get_pcb_revision_from_eeprom();
switch (version) {
case 'a':
case 'A':
fdtfile = FDTFILE_VISIONFIVE2_1_2A;
break;
case 'b':
case 'B':
default:
fdtfile = FDTFILE_VISIONFIVE2_1_3B;
break;
};
env_set("fdtfile", fdtfile);
}
int board_init(void)
{
enable_caches();
@ -43,6 +74,14 @@ int board_init(void)
return 0;
}
int board_late_init(void)
{
if (CONFIG_IS_ENABLED(ID_EEPROM))
set_fdtfile();
return 0;
}
void *board_fdt_blob_setup(int *err)
{
*err = 0;