mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
495f3774be
Add Intel Edison board which is using U-Boot. The patch is based on work done by the following people (in alphabetical order): Aiden Park <aiden.park@intel.com> Dukjoon Jeon <dukjoon.jeon@intel.com> eric.park <eric.park@intel.com> Fabien Chereau <fabien.chereau@intel.com> Felipe Balbi <felipe.balbi@linux.intel.com> Scott D Phillips <scott.d.phillips@intel.com> Sebastien Colleur <sebastienx.colleur@intel.com> Steve Sakoman <steve.sakoman@intel.com> Vincent Tinelli <vincent.tinelli@intel.com> In case we're building for Intel Edison, we must have 4096 bytes of zeroes in the beginning on u-boot.bin. This is done in board/intel/edison/config.mk. First run sets hardware_id environment variable which is read from System Controller Unit (SCU). Serial number (serial# environment variable) is generated based on eMMC CID. MAC address on USB network interface is unique to the board but kept the same all over the time. Set mac address from U-Boot using following scheme: OUI = 02:00:86 next 3 bytes of MAC address set from eMMC serial number This allows to have a unique mac address across reboot and flashing. Signed-off-by: Vincent Tinelli <vincent.tinelli@intel.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org> [bmeng: Add MAINTAINERS file for Intel Edison board] Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
105 lines
2.0 KiB
C
105 lines
2.0 KiB
C
/*
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* Copyright (c) 2017 Intel Corporation
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <dwc3-uboot.h>
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#include <mmc.h>
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#include <u-boot/md5.h>
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#include <usb.h>
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#include <watchdog.h>
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#include <linux/usb/gadget.h>
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#include <asm/cache.h>
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#include <asm/scu.h>
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#include <asm/u-boot-x86.h>
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DECLARE_GLOBAL_DATA_PTR;
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static struct dwc3_device dwc3_device_data = {
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.maximum_speed = USB_SPEED_HIGH,
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.base = CONFIG_SYS_USB_OTG_BASE,
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.dr_mode = USB_DR_MODE_PERIPHERAL,
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.index = 0,
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};
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int usb_gadget_handle_interrupts(int controller_index)
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{
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dwc3_uboot_handle_interrupt(controller_index);
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WATCHDOG_RESET();
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return 0;
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}
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int board_usb_init(int index, enum usb_init_type init)
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{
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if (index == 0 && init == USB_INIT_DEVICE)
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return dwc3_uboot_init(&dwc3_device_data);
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return -EINVAL;
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}
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int board_usb_cleanup(int index, enum usb_init_type init)
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{
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if (index == 0 && init == USB_INIT_DEVICE) {
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dwc3_uboot_exit(index);
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return 0;
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}
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return -EINVAL;
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}
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static void assign_serial(void)
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{
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struct mmc *mmc = find_mmc_device(0);
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unsigned char ssn[16];
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char usb0addr[18];
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char serial[33];
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int i;
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if (!mmc)
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return;
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md5((unsigned char *)mmc->cid, sizeof(mmc->cid), ssn);
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snprintf(usb0addr, sizeof(usb0addr), "02:00:86:%02x:%02x:%02x",
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ssn[13], ssn[14], ssn[15]);
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setenv("usb0addr", usb0addr);
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for (i = 0; i < 16; i++)
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snprintf(&serial[2 * i], 3, "%02x", ssn[i]);
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setenv("serial#", serial);
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#if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
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saveenv();
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#endif
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}
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static void assign_hardware_id(void)
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{
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struct ipc_ifwi_version v;
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char hardware_id[4];
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int ret;
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ret = scu_ipc_command(IPCMSG_GET_FW_REVISION, 1, NULL, 0, (u32 *)&v, 4);
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if (ret < 0)
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printf("Can't retrieve hardware revision\n");
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snprintf(hardware_id, sizeof(hardware_id), "%02X", v.hardware_id);
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setenv("hardware_id", hardware_id);
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#if defined(CONFIG_CMD_SAVEENV) && !defined(CONFIG_ENV_IS_NOWHERE)
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saveenv();
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#endif
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}
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int board_late_init(void)
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{
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if (!getenv("serial#"))
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assign_serial();
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if (!getenv("hardware_id"))
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assign_hardware_id();
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return 0;
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}
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