blob: 51a4fa103061911c06596b81506d3bba3c1975cf [file] [log] [blame]
/*
* (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;
}