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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2018 Cisco Systems, Inc.
* (C) Copyright 2019 Synamedia
*
* Author: Thomas Fitzsimmons <fitzsim@fitzsim.org>
*/
#include <linux/types.h>
#include <common.h>
#include <asm/io.h>
#include <asm/bootm.h>
#include <mach/timer.h>
#include <mmc.h>
#include <fdtdec.h>
DECLARE_GLOBAL_DATA_PTR;
#define BCMSTB_DATA_SECTION __attribute__((section(".data")))
struct bcmstb_boot_parameters bcmstb_boot_parameters BCMSTB_DATA_SECTION;
phys_addr_t prior_stage_fdt_address BCMSTB_DATA_SECTION;
union reg_value_union {
const char *data;
const phys_addr_t *address;
};
int board_init(void)
{
return 0;
}
u32 get_board_rev(void)
{
return 0;
}
void reset_cpu(ulong ignored)
{
}
int print_cpuinfo(void)
{
return 0;
}
int dram_init(void)
{
if (fdtdec_setup_mem_size_base() != 0)
return -EINVAL;
return 0;
}
int dram_init_banksize(void)
{
fdtdec_setup_memory_banksize();
/*
* On this SoC, U-Boot is running as an ELF file. Change the
* relocation address to CONFIG_SYS_TEXT_BASE, so that in
* setup_reloc, gd->reloc_off works out to 0, effectively
* disabling relocation. Otherwise U-Boot hangs in the setup
* instructions just before relocate_code in
* arch/arm/lib/crt0.S.
*/
gd->relocaddr = CONFIG_SYS_TEXT_BASE;
return 0;
}
void enable_caches(void)
{
/*
* This port assumes that the prior stage bootloader has
* enabled I-cache and D-cache already. Implementing this
* function silences the warning in the default function.
*/
}
int timer_init(void)
{
gd->arch.timer_rate_hz = readl(BCMSTB_TIMER_FREQUENCY);
return 0;
}
ulong get_tbclk(void)
{
return gd->arch.timer_rate_hz;
}
uint64_t get_ticks(void)
{
gd->timebase_h = readl(BCMSTB_TIMER_HIGH);
gd->timebase_l = readl(BCMSTB_TIMER_LOW);
return ((uint64_t)gd->timebase_h << 32) | gd->timebase_l;
}
int board_late_init(void)
{
debug("Arguments from prior stage bootloader:\n");
debug("General Purpose Register 0: 0x%x\n", bcmstb_boot_parameters.r0);
debug("General Purpose Register 1: 0x%x\n", bcmstb_boot_parameters.r1);
debug("General Purpose Register 2: 0x%x\n", bcmstb_boot_parameters.r2);
debug("General Purpose Register 3: 0x%x\n", bcmstb_boot_parameters.r3);
debug("Stack Pointer Register: 0x%x\n", bcmstb_boot_parameters.sp);
debug("Link Register: 0x%x\n", bcmstb_boot_parameters.lr);
debug("Assuming timer frequency register at: 0x%p\n",
(void *)BCMSTB_TIMER_FREQUENCY);
debug("Read timer frequency (in Hz): %ld\n", gd->arch.timer_rate_hz);
debug("Prior stage provided DTB at: 0x%p\n",
(void *)prior_stage_fdt_address);
/*
* Set fdtcontroladdr in the environment so that scripts can
* refer to it, for example, to reuse it for fdtaddr.
*/
env_set_hex("fdtcontroladdr", prior_stage_fdt_address);
/*
* Do not set machid to the machine identifier value provided
* by the prior stage bootloader (bcmstb_boot_parameters.r1)
* because we're using a device tree to boot Linux.
*/
return 0;
}
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