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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2022 StarFive Technology Co., Ltd.
* Author: Yanhong Wang<yanhong.wang@starfivetech.com>
*/
#include <cpu_func.h>
#include <dm.h>
#include <fdt_support.h>
#include <env.h>
#include <log.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
/* enable U74-mc hart1~hart4 prefetcher */
static void enable_prefetcher(void)
{
u8 hart;
u32 *reg;
/* JH7110 use U74MC CORE IP, it include five cores(one S7 and four U7),
* but only U7 cores support prefetcher configuration
*/
for (hart = 1; hart < 5; hart++) {
reg = (void *)(u64)(JH7110_L2_PREFETCHER_BASE_ADDR
+ hart * JH7110_L2_PREFETCHER_HART_OFFSET);
mb(); /* memory barrier */
setbits_le32(reg, 0x1);
mb(); /* memory barrier */
}
}
/**
* set_fdtfile() - set the $fdtfile variable based on product data in EEPROM
*/
static void set_fdtfile(void)
{
const char *fdtfile;
fdtfile = env_get("fdtfile");
if (fdtfile)
return;
if (!get_product_id_from_eeprom()) {
log_err("Can't read EEPROM\n");
return;
}
if (!strncmp(get_product_id_from_eeprom(), "FML13V01", 8)) {
fdtfile = "starfive/jh7110-deepcomputing-fml13v01.dtb";
} else if (!strncmp(get_product_id_from_eeprom(), "MARS", 4)) {
fdtfile = "starfive/jh7110-milkv-mars.dtb";
} else if (!strncmp(get_product_id_from_eeprom(), "STAR64", 6)) {
fdtfile = "starfive/jh7110-pine64-star64.dtb";
} else if (!strncmp(get_product_id_from_eeprom(), "VF7110", 6)) {
switch (get_pcb_revision_from_eeprom()) {
case 'a':
case 'A':
fdtfile = "starfive/jh7110-starfive-visionfive-2-v1.2a.dtb";
break;
case 'b':
case 'B':
fdtfile = "starfive/jh7110-starfive-visionfive-2-v1.3b.dtb";
break;
default:
log_err("Unknown revision\n");
return;
}
} else {
log_err("Unknown product\n");
return;
}
env_set("fdtfile", fdtfile);
}
int board_init(void)
{
enable_caches();
enable_prefetcher();
return 0;
}
int board_late_init(void)
{
if (CONFIG_IS_ENABLED(ID_EEPROM))
set_fdtfile();
return 0;
}
int ft_board_setup(void *blob, struct bd_info *bd)
{
return fdt_fixup_memory(blob, 0x40000000, gd->ram_size);
}
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