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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 <cpu_func.h>
- #include <init.h>
- #include <time.h>
- #include <linux/types.h>
- #include <common.h>
- #include <env.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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