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/*
* (C) Copyright 2012-2013,2015 Stephen Warren
*
* SPDX-License-Identifier: GPL-2.0
*/
#include <common.h>
#include <config.h>
#include <dm.h>
#include <fdt_support.h>
#include <fdt_simplefb.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>
#include <dm/platform_data/serial_pl01x.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,
};
static const struct pl01x_serial_platdata serial_platdata = {
#ifdef CONFIG_BCM2836
.base = 0x3f201000,
#else
.base = 0x20201000,
#endif
.type = TYPE_PL011,
.clock = 3000000,
};
U_BOOT_DEVICE(bcm2835_serials) = {
.name = "serial_pl01x",
.platdata = &serial_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;
bool has_onboard_eth;
} models[] = {
[0] = {
"Unknown model",
#ifdef CONFIG_BCM2836
"bcm2836-rpi-other.dtb",
#else
"bcm2835-rpi-other.dtb",
#endif
false,
},
#ifdef CONFIG_BCM2836
[BCM2836_BOARD_REV_2_B] = {
"2 Model B",
"bcm2836-rpi-2-b.dtb",
true,
},
#else
[BCM2835_BOARD_REV_B_I2C0_2] = {
"Model B (no P5)",
"bcm2835-rpi-b-i2c0.dtb",
true,
},
[BCM2835_BOARD_REV_B_I2C0_3] = {
"Model B (no P5)",
"bcm2835-rpi-b-i2c0.dtb",
true,
},
[BCM2835_BOARD_REV_B_I2C1_4] = {
"Model B",
"bcm2835-rpi-b.dtb",
true,
},
[BCM2835_BOARD_REV_B_I2C1_5] = {
"Model B",
"bcm2835-rpi-b.dtb",
true,
},
[BCM2835_BOARD_REV_B_I2C1_6] = {
"Model B",
"bcm2835-rpi-b.dtb",
true,
},
[BCM2835_BOARD_REV_A_7] = {
"Model A",
"bcm2835-rpi-a.dtb",
false,
},
[BCM2835_BOARD_REV_A_8] = {
"Model A",
"bcm2835-rpi-a.dtb",
false,
},
[BCM2835_BOARD_REV_A_9] = {
"Model A",
"bcm2835-rpi-a.dtb",
false,
},
[BCM2835_BOARD_REV_B_REV2_d] = {
"Model B rev2",
"bcm2835-rpi-b-rev2.dtb",
true,
},
[BCM2835_BOARD_REV_B_REV2_e] = {
"Model B rev2",
"bcm2835-rpi-b-rev2.dtb",
true,
},
[BCM2835_BOARD_REV_B_REV2_f] = {
"Model B rev2",
"bcm2835-rpi-b-rev2.dtb",
true,
},
[BCM2835_BOARD_REV_B_PLUS] = {
"Model B+",
"bcm2835-rpi-b-plus.dtb",
true,
},
[BCM2835_BOARD_REV_CM] = {
"Compute Module",
"bcm2835-rpi-cm.dtb",
false,
},
[BCM2835_BOARD_REV_A_PLUS] = {
"Model A+",
"bcm2835-rpi-a-plus.dtb",
false,
},
[BCM2835_BOARD_REV_B_PLUS_13] = {
"Model B+",
"bcm2835-rpi-b-plus.dtb",
true,
},
[BCM2835_BOARD_REV_CM_14] = {
"Compute Module",
"bcm2835-rpi-cm.dtb",
false,
},
#endif
};
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;
setenv("fdtfile", fdtfile);
}
static void set_usbethaddr(void)
{
ALLOC_ALIGN_BUFFER(struct msg_get_mac_address, msg, 1, 16);
int ret;
if (!models[rpi_board_rev].has_onboard_eth)
return;
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;
}
/*
* For details of old-vs-new scheme, see:
* https://github.com/pimoroni/RPi.version/blob/master/RPi/version.py
* http://www.raspberrypi.org/forums/viewtopic.php?f=63&t=99293&p=690282
* (a few posts down)
*
* For the RPi 1, bit 24 is the "warranty bit", so we mask off just the
* lower byte to use as the board rev:
* http://www.raspberrypi.org/forums/viewtopic.php?f=63&t=98367&start=250
* http://www.raspberrypi.org/forums/viewtopic.php?f=31&t=20594
*/
rpi_board_rev = msg->get_board_rev.body.resp.rev;
if (rpi_board_rev & 0x800000)
rpi_board_rev = (rpi_board_rev >> 4) & 0xff;
else
rpi_board_rev &= 0xff;
if (rpi_board_rev >= ARRAY_SIZE(models)) {
printf("RPI: Board rev %u outside known range\n",
rpi_board_rev);
rpi_board_rev = 0;
}
if (!models[rpi_board_rev].name) {
printf("RPI: Board rev %u unknown\n", rpi_board_rev);
rpi_board_rev = 0;
}
name = models[rpi_board_rev].name;
printf("RPI %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;
}