mirror of
https://source.denx.de/u-boot/u-boot.git
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a2364d97ff
Heavily inspired by Apple board code. Use the LMB allocator to configure load addresses at runtime, and implement a lookup table for selecting a devicetree. As some Qualcomm RBx boards have different RAM capacities and base addresses, it isn't possible to hardcode these regions. Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Reviewed-by: Sumit Garg <sumit.garg@linaro.org> Tested-by: Sumit Garg <sumit.garg@linaro.org> #qcs404 Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
133 lines
2.9 KiB
C
133 lines
2.9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Board init file for Dragonboard 410C
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*
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* (C) Copyright 2015 Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
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*/
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#include <button.h>
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#include <common.h>
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#include <cpu_func.h>
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#include <dm.h>
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#include <dm/pinctrl.h>
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#include <env.h>
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#include <init.h>
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#include <mmc.h>
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#include <net.h>
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#include <usb.h>
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#include <asm/cache.h>
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#include <asm/global_data.h>
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#include <asm/gpio.h>
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#include <fdt_support.h>
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#include <linux/delay.h>
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DECLARE_GLOBAL_DATA_PTR;
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/* UNSTUFF_BITS macro taken from Linux Kernel: drivers/mmc/core/sd.c */
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#define UNSTUFF_BITS(resp, start, size) \
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({ \
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const int __size = size; \
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const u32 __mask = (__size < 32 ? 1 << __size : 0) - 1; \
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const int __off = 3 - ((start) / 32); \
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const int __shft = (start) & 31; \
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u32 __res; \
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\
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__res = resp[__off] >> __shft; \
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if (__size + __shft > 32) \
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__res |= resp[__off - 1] << ((32 - __shft) % 32); \
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__res & __mask; \
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})
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static u32 msm_board_serial(void)
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{
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struct mmc *mmc_dev;
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mmc_dev = find_mmc_device(0);
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if (!mmc_dev)
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return 0;
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if (mmc_init(mmc_dev))
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return 0;
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return UNSTUFF_BITS(mmc_dev->cid, 16, 32);
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}
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static void msm_generate_mac_addr(u8 *mac)
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{
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/* use locally adminstrated pool */
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mac[0] = 0x02;
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mac[1] = 0x00;
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/*
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* Put the 32-bit serial number in the last 32-bit of the MAC address.
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* Use big endian order so it is consistent with the serial number
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* written as a hexadecimal string, e.g. 0x1234abcd -> 02:00:12:34:ab:cd
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*/
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put_unaligned_be32(msm_board_serial(), &mac[2]);
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}
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/* Check for vol- button - if pressed - stop autoboot */
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int misc_init_r(void)
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{
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struct udevice *btn;
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int ret;
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enum button_state_t state;
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ret = button_get_by_label("vol_down", &btn);
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if (ret < 0) {
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printf("Couldn't find power button!\n");
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return ret;
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}
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state = button_get_state(btn);
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if (state == BUTTON_ON) {
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env_set("preboot", "setenv preboot; fastboot 0");
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printf("vol_down pressed - Starting fastboot.\n");
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}
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return 0;
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}
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int qcom_late_init(void)
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{
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char serial[16];
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memset(serial, 0, 16);
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snprintf(serial, 13, "%x", msm_board_serial());
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env_set("serial#", serial);
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return 0;
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}
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/* Fixup of DTB for Linux Kernel
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* 1. Fixup installed DRAM.
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* 2. Fixup WLAN/BT Mac address:
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* First, check if MAC addresses for WLAN/BT exists as environemnt
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* variables wlanaddr,btaddr. if not, generate a unique address.
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*/
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int ft_board_setup(void *blob, struct bd_info *bd)
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{
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u8 mac[ARP_HLEN];
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if (!eth_env_get_enetaddr("wlanaddr", mac)) {
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msm_generate_mac_addr(mac);
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};
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do_fixup_by_compat(blob, "qcom,wcnss-wlan",
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"local-mac-address", mac, ARP_HLEN, 1);
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if (!eth_env_get_enetaddr("btaddr", mac)) {
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msm_generate_mac_addr(mac);
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/* The BD address is same as WLAN MAC address but with
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* least significant bit flipped.
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*/
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mac[0] ^= 0x01;
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};
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do_fixup_by_compat(blob, "qcom,wcnss-bt",
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"local-bd-address", mac, ARP_HLEN, 1);
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return 0;
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}
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