upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
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128 lines
2.3 KiB
128 lines
2.3 KiB
6 years ago
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// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2018 Marek Behun <marek.behun@nic.cz>
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*/
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#include <common.h>
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#include <dm.h>
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#include <clk.h>
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#include <spi.h>
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#include <linux/string.h>
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#ifdef CONFIG_WDT_ARMADA_3720
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#include <wdt.h>
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#endif
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DECLARE_GLOBAL_DATA_PTR;
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#ifdef CONFIG_WDT_ARMADA_3720
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static struct udevice *watchdog_dev;
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void watchdog_reset(void)
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{
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static ulong next_reset;
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ulong now;
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if (!watchdog_dev)
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return;
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now = timer_get_us();
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/* Do not reset the watchdog too often */
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if (now > next_reset) {
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wdt_reset(watchdog_dev);
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next_reset = now + 100000;
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}
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}
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#endif
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int board_init(void)
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{
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/* address of boot parameters */
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gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
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#ifdef CONFIG_WDT_ARMADA_3720
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if (uclass_get_device(UCLASS_WDT, 0, &watchdog_dev)) {
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printf("Cannot find Armada 3720 watchdog!\n");
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} else {
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printf("Enabling Armada 3720 watchdog (3 minutes timeout).\n");
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wdt_start(watchdog_dev, 180000, 0);
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}
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#endif
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return 0;
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}
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int last_stage_init(void)
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{
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struct spi_slave *slave;
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struct udevice *dev;
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u8 din[10], dout[10];
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int ret, i;
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size_t len = 0;
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char module_topology[128];
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ret = spi_get_bus_and_cs(0, 1, 20000000, SPI_CPHA, "spi_generic_drv",
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"mox-modules@1", &dev, &slave);
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if (ret)
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goto fail;
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ret = spi_claim_bus(slave);
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if (ret)
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goto fail_free;
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memset(din, 0, 10);
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memset(dout, 0, 10);
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ret = spi_xfer(slave, 80, dout, din, SPI_XFER_ONCE);
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if (ret)
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goto fail_release;
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if (din[0] != 0x00 && din[0] != 0xff)
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goto fail_release;
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printf("Module Topology:\n");
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for (i = 1; i < 10 && din[i] != 0xff; ++i) {
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u8 mid = din[i] & 0xf;
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size_t mlen;
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const char *mname = "";
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switch (mid) {
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case 0x1:
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mname = "sfp-";
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printf("% 4i: SFP Module\n", i);
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break;
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case 0x2:
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mname = "pci-";
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printf("% 4i: Mini-PCIe Module\n", i);
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break;
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case 0x3:
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mname = "topaz-";
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printf("% 4i: Topaz Switch Module\n", i);
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break;
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default:
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printf("% 4i: unknown (ID %i)\n", i, mid);
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}
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mlen = strlen(mname);
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if (len + mlen < sizeof(module_topology)) {
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strcpy(module_topology + len, mname);
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len += mlen;
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}
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}
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printf("\n");
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module_topology[len > 0 ? len - 1 : 0] = '\0';
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env_set("module_topology", module_topology);
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fail_release:
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spi_release_bus(slave);
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fail_free:
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spi_free_slave(slave);
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fail:
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if (ret)
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printf("Cannot read module topology!\n");
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return ret;
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}
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