ARM: rpi: rename rpi_b to rpi

The U-Boot port runs on a variety of RPi models, not just the B. So,
rename the port to something slightly more generic.

Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>

4 files changed, 319 insertions, 0 deletions

diff --git a/board/raspberrypi/rpi/Kconfig b/board/raspberrypi/rpi/Kconfig
new file mode 100644
index 0000000..6a538cf
--- /dev/null
+++ b/board/raspberrypi/rpi/Kconfig
@@ -0,0 +1,15 @@
+if TARGET_RPI
+
+config SYS_BOARD
+	default "rpi"
+
+config SYS_VENDOR
+	default "raspberrypi"
+
+config SYS_SOC
+	default "bcm2835"
+
+config SYS_CONFIG_NAME
+	default "rpi"
+
+endif
diff --git a/board/raspberrypi/rpi/MAINTAINERS b/board/raspberrypi/rpi/MAINTAINERS
new file mode 100644
index 0000000..6dcb7bd
--- /dev/null
+++ b/board/raspberrypi/rpi/MAINTAINERS
@@ -0,0 +1,6 @@
+RPI BOARD
+M:	Stephen Warren <swarren@wwwdotorg.org>
+S:	Maintained
+F:	board/raspberrypi/rpi/
+F:	include/configs/rpi.h
+F:	configs/rpi_defconfig
diff --git a/board/raspberrypi/rpi/Makefile b/board/raspberrypi/rpi/Makefile
new file mode 100644
index 0000000..c53c92b
--- /dev/null
+++ b/board/raspberrypi/rpi/Makefile
@@ -0,0 +1,15 @@
+#
+# 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.
+#
+
+obj-y	:= rpi.o
diff --git a/board/raspberrypi/rpi/rpi.c b/board/raspberrypi/rpi/rpi.c
new file mode 100644
index 0000000..51a4fa1
--- /dev/null
+++ b/board/raspberrypi/rpi/rpi.c
@@ -0,0 +1,283 @@
+/*
+ * (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;
+}