--- /dev/null
+/*
+ * (C) Copyright 2012-2013 Stephen Warren
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <common.h>
+#include <config.h>
+#include <dm.h>
+#include <fdt_support.h>
+#include <lcd.h>
+#include <mmc.h>
+#include <asm/gpio.h>
+#include <asm/arch/mbox.h>
+#include <asm/arch/sdhci.h>
+#include <asm/global_data.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static const struct bcm2835_gpio_platdata gpio_platdata = {
+ .base = BCM2835_GPIO_BASE,
+};
+
+U_BOOT_DEVICE(bcm2835_gpios) = {
+ .name = "gpio_bcm2835",
+ .platdata = &gpio_platdata,
+};
+
+struct msg_get_arm_mem {
+ struct bcm2835_mbox_hdr hdr;
+ struct bcm2835_mbox_tag_get_arm_mem get_arm_mem;
+ u32 end_tag;
+};
+
+struct msg_get_board_rev {
+ struct bcm2835_mbox_hdr hdr;
+ struct bcm2835_mbox_tag_get_board_rev get_board_rev;
+ u32 end_tag;
+};
+
+struct msg_get_mac_address {
+ struct bcm2835_mbox_hdr hdr;
+ struct bcm2835_mbox_tag_get_mac_address get_mac_address;
+ u32 end_tag;
+};
+
+struct msg_set_power_state {
+ struct bcm2835_mbox_hdr hdr;
+ struct bcm2835_mbox_tag_set_power_state set_power_state;
+ u32 end_tag;
+};
+
+struct msg_get_clock_rate {
+ struct bcm2835_mbox_hdr hdr;
+ struct bcm2835_mbox_tag_get_clock_rate get_clock_rate;
+ u32 end_tag;
+};
+
+/* See comments in mbox.h for data source */
+static const struct {
+ const char *name;
+ const char *fdtfile;
+} models[] = {
+ [BCM2835_BOARD_REV_B_I2C0_2] = {
+ "Model B (no P5)",
+ "bcm2835-rpi-b-i2c0.dtb",
+ },
+ [BCM2835_BOARD_REV_B_I2C0_3] = {
+ "Model B (no P5)",
+ "bcm2835-rpi-b-i2c0.dtb",
+ },
+ [BCM2835_BOARD_REV_B_I2C1_4] = {
+ "Model B",
+ "bcm2835-rpi-b.dtb",
+ },
+ [BCM2835_BOARD_REV_B_I2C1_5] = {
+ "Model B",
+ "bcm2835-rpi-b.dtb",
+ },
+ [BCM2835_BOARD_REV_B_I2C1_6] = {
+ "Model B",
+ "bcm2835-rpi-b.dtb",
+ },
+ [BCM2835_BOARD_REV_A_7] = {
+ "Model A",
+ "bcm2835-rpi-a.dtb",
+ },
+ [BCM2835_BOARD_REV_A_8] = {
+ "Model A",
+ "bcm2835-rpi-a.dtb",
+ },
+ [BCM2835_BOARD_REV_A_9] = {
+ "Model A",
+ "bcm2835-rpi-a.dtb",
+ },
+ [BCM2835_BOARD_REV_B_REV2_d] = {
+ "Model B rev2",
+ "bcm2835-rpi-b-rev2.dtb",
+ },
+ [BCM2835_BOARD_REV_B_REV2_e] = {
+ "Model B rev2",
+ "bcm2835-rpi-b-rev2.dtb",
+ },
+ [BCM2835_BOARD_REV_B_REV2_f] = {
+ "Model B rev2",
+ "bcm2835-rpi-b-rev2.dtb",
+ },
+ [BCM2835_BOARD_REV_B_PLUS] = {
+ "Model B+",
+ "bcm2835-rpi-b-plus.dtb",
+ },
+ [BCM2835_BOARD_REV_CM] = {
+ "Compute Module",
+ "bcm2835-rpi-cm.dtb",
+ },
+};
+
+u32 rpi_board_rev = 0;
+
+int dram_init(void)
+{
+ ALLOC_ALIGN_BUFFER(struct msg_get_arm_mem, msg, 1, 16);
+ int ret;
+
+ BCM2835_MBOX_INIT_HDR(msg);
+ BCM2835_MBOX_INIT_TAG(&msg->get_arm_mem, GET_ARM_MEMORY);
+
+ ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
+ if (ret) {
+ printf("bcm2835: Could not query ARM memory size\n");
+ return -1;
+ }
+
+ gd->ram_size = msg->get_arm_mem.body.resp.mem_size;
+
+ return 0;
+}
+
+static void set_fdtfile(void)
+{
+ const char *fdtfile;
+
+ if (getenv("fdtfile"))
+ return;
+
+ fdtfile = models[rpi_board_rev].fdtfile;
+ if (!fdtfile)
+ fdtfile = "bcm2835-rpi-other.dtb";
+
+ setenv("fdtfile", fdtfile);
+}
+
+static void set_usbethaddr(void)
+{
+ ALLOC_ALIGN_BUFFER(struct msg_get_mac_address, msg, 1, 16);
+ int ret;
+
+ if (getenv("usbethaddr"))
+ return;
+
+ BCM2835_MBOX_INIT_HDR(msg);
+ BCM2835_MBOX_INIT_TAG(&msg->get_mac_address, GET_MAC_ADDRESS);
+
+ ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
+ if (ret) {
+ printf("bcm2835: Could not query MAC address\n");
+ /* Ignore error; not critical */
+ return;
+ }
+
+ eth_setenv_enetaddr("usbethaddr", msg->get_mac_address.body.resp.mac);
+
+ return;
+}
+
+int misc_init_r(void)
+{
+ set_fdtfile();
+ set_usbethaddr();
+ return 0;
+}
+
+static int power_on_module(u32 module)
+{
+ ALLOC_ALIGN_BUFFER(struct msg_set_power_state, msg_pwr, 1, 16);
+ int ret;
+
+ BCM2835_MBOX_INIT_HDR(msg_pwr);
+ BCM2835_MBOX_INIT_TAG(&msg_pwr->set_power_state,
+ SET_POWER_STATE);
+ msg_pwr->set_power_state.body.req.device_id = module;
+ msg_pwr->set_power_state.body.req.state =
+ BCM2835_MBOX_SET_POWER_STATE_REQ_ON |
+ BCM2835_MBOX_SET_POWER_STATE_REQ_WAIT;
+
+ ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN,
+ &msg_pwr->hdr);
+ if (ret) {
+ printf("bcm2835: Could not set module %u power state\n",
+ module);
+ return -1;
+ }
+
+ return 0;
+}
+
+static void get_board_rev(void)
+{
+ ALLOC_ALIGN_BUFFER(struct msg_get_board_rev, msg, 1, 16);
+ int ret;
+ const char *name;
+
+ BCM2835_MBOX_INIT_HDR(msg);
+ BCM2835_MBOX_INIT_TAG(&msg->get_board_rev, GET_BOARD_REV);
+
+ ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
+ if (ret) {
+ printf("bcm2835: Could not query board revision\n");
+ /* Ignore error; not critical */
+ return;
+ }
+
+ rpi_board_rev = msg->get_board_rev.body.resp.rev;
+ if (rpi_board_rev >= ARRAY_SIZE(models))
+ rpi_board_rev = 0;
+
+ name = models[rpi_board_rev].name;
+ if (!name)
+ name = "Unknown model";
+ printf("RPI model: %s\n", name);
+}
+
+int board_init(void)
+{
+ get_board_rev();
+
+ gd->bd->bi_boot_params = 0x100;
+
+ return power_on_module(BCM2835_MBOX_POWER_DEVID_USB_HCD);
+}
+
+int board_mmc_init(bd_t *bis)
+{
+ ALLOC_ALIGN_BUFFER(struct msg_get_clock_rate, msg_clk, 1, 16);
+ int ret;
+
+ power_on_module(BCM2835_MBOX_POWER_DEVID_SDHCI);
+
+ BCM2835_MBOX_INIT_HDR(msg_clk);
+ BCM2835_MBOX_INIT_TAG(&msg_clk->get_clock_rate, GET_CLOCK_RATE);
+ msg_clk->get_clock_rate.body.req.clock_id = BCM2835_MBOX_CLOCK_ID_EMMC;
+
+ ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg_clk->hdr);
+ if (ret) {
+ printf("bcm2835: Could not query eMMC clock rate\n");
+ return -1;
+ }
+
+ return bcm2835_sdhci_init(BCM2835_SDHCI_BASE,
+ msg_clk->get_clock_rate.body.resp.rate_hz);
+}
+
+int ft_board_setup(void *blob, bd_t *bd)
+{
+ /*
+ * For now, we simply always add the simplefb DT node. Later, we
+ * should be more intelligent, and e.g. only do this if no enabled DT
+ * node exists for the "real" graphics driver.
+ */
+ lcd_dt_simplefb_add_node(blob);
+
+ return 0;
+}
projects / karo-tx-uboot.git / blobdiff