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https://xff.cz/git/u-boot/
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Synopsys DesignWare ARC EM Development Kit (ARC EMDK) is an FPGA-based development platform from Synopsys aimed to speed-up development of software for ARC EM cores and entire subsystems based on ARC EM like Data Fusion, Secure and Sensor & Control subsystems. U-Boot is supposed to be used as a primary bootloader on EMDK allowing users to easily load and start their application from micro-SD card. Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
93 lines
2.0 KiB
C
93 lines
2.0 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2018 Synopsys, Inc. All rights reserved.
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*/
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#include <common.h>
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#include <dwmmc.h>
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#include <malloc.h>
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DECLARE_GLOBAL_DATA_PTR;
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#define ARC_PERIPHERAL_BASE 0xF0000000
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#define SDIO_BASE (ARC_PERIPHERAL_BASE + 0x10000)
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int board_mmc_init(bd_t *bis)
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{
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struct dwmci_host *host = NULL;
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host = malloc(sizeof(struct dwmci_host));
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if (!host) {
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printf("dwmci_host malloc fail!\n");
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return 1;
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}
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memset(host, 0, sizeof(struct dwmci_host));
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host->name = "Synopsys Mobile storage";
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host->ioaddr = (void *)SDIO_BASE;
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host->buswidth = 4;
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host->dev_index = 0;
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host->bus_hz = 50000000;
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add_dwmci(host, host->bus_hz / 2, 400000);
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return 0;
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}
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#define CREG_BASE 0xF0001000
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#define CREG_BOOT_OFFSET 0
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#define CREG_BOOT_WP_OFFSET 8
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#define CGU_BASE 0xF0000000
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#define CGU_IP_SW_RESET 0x0FF0
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void reset_cpu(ulong addr)
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{
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writel(1, (u32 *)(CGU_BASE + CGU_IP_SW_RESET));
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while (1)
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; /* loop forever till reset */
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}
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static int do_emdk_rom(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
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{
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u32 creg_boot = readl((u32 *)(CREG_BASE + CREG_BOOT_OFFSET));
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if (!strcmp(argv[1], "unlock"))
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creg_boot &= ~BIT(CREG_BOOT_WP_OFFSET);
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else if (!strcmp(argv[1], "lock"))
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creg_boot |= BIT(CREG_BOOT_WP_OFFSET);
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else
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return CMD_RET_USAGE;
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writel(creg_boot, (u32 *)(CREG_BASE + CREG_BOOT_OFFSET));
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return CMD_RET_SUCCESS;
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}
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cmd_tbl_t cmd_emdk[] = {
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U_BOOT_CMD_MKENT(rom, 2, 0, do_emdk_rom, "", ""),
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};
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static int do_emdk(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
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{
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cmd_tbl_t *c;
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c = find_cmd_tbl(argv[1], cmd_emdk, ARRAY_SIZE(cmd_emdk));
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/* Strip off leading 'emdk' command */
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argc--;
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argv++;
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if (c == NULL || argc > c->maxargs)
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return CMD_RET_USAGE;
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return c->cmd(cmdtp, flag, argc, argv);
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}
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U_BOOT_CMD(
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emdk, CONFIG_SYS_MAXARGS, 0, do_emdk,
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"Synopsys EMDK specific commands",
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"rom unlock - Unlock non-volatile memory for writing\n"
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"emdk rom lock - Lock non-volatile memory to prevent writing\n"
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);
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