2 * (C) Copyright 2012-2013 Stephen Warren
4 * See file CREDITS for list of people who contributed to this
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * version 2 as published by the Free Software Foundation.
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
20 #include <asm/arch/mbox.h>
21 #include <asm/arch/sdhci.h>
22 #include <asm/global_data.h>
24 DECLARE_GLOBAL_DATA_PTR;
26 struct msg_get_arm_mem {
27 struct bcm2835_mbox_hdr hdr;
28 struct bcm2835_mbox_tag_get_arm_mem get_arm_mem;
32 struct msg_set_power_state {
33 struct bcm2835_mbox_hdr hdr;
34 struct bcm2835_mbox_tag_set_power_state set_power_state;
38 struct msg_get_clock_rate {
39 struct bcm2835_mbox_hdr hdr;
40 struct bcm2835_mbox_tag_get_clock_rate get_clock_rate;
46 ALLOC_ALIGN_BUFFER(struct msg_get_arm_mem, msg, 1, 16);
49 BCM2835_MBOX_INIT_HDR(msg);
50 BCM2835_MBOX_INIT_TAG(&msg->get_arm_mem, GET_ARM_MEMORY);
52 ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
54 printf("bcm2835: Could not query ARM memory size\n");
58 gd->ram_size = msg->get_arm_mem.body.resp.mem_size;
63 static int power_on_module(u32 module)
65 ALLOC_ALIGN_BUFFER(struct msg_set_power_state, msg_pwr, 1, 16);
68 BCM2835_MBOX_INIT_HDR(msg_pwr);
69 BCM2835_MBOX_INIT_TAG(&msg_pwr->set_power_state,
71 msg_pwr->set_power_state.body.req.device_id = module;
72 msg_pwr->set_power_state.body.req.state =
73 BCM2835_MBOX_SET_POWER_STATE_REQ_ON |
74 BCM2835_MBOX_SET_POWER_STATE_REQ_WAIT;
76 ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN,
79 printf("bcm2835: Could not set module %u power state\n",
89 gd->bd->bi_boot_params = 0x100;
91 return power_on_module(BCM2835_MBOX_POWER_DEVID_USB_HCD);
94 int board_mmc_init(void)
96 ALLOC_ALIGN_BUFFER(struct msg_get_clock_rate, msg_clk, 1, 16);
99 power_on_module(BCM2835_MBOX_POWER_DEVID_SDHCI);
101 BCM2835_MBOX_INIT_HDR(msg_clk);
102 BCM2835_MBOX_INIT_TAG(&msg_clk->get_clock_rate, GET_CLOCK_RATE);
103 msg_clk->get_clock_rate.body.req.clock_id = BCM2835_MBOX_CLOCK_ID_EMMC;
105 ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg_clk->hdr);
107 printf("bcm2835: Could not query eMMC clock rate\n");
111 return bcm2835_sdhci_init(BCM2835_SDHCI_BASE,
112 msg_clk->get_clock_rate.body.resp.rate_hz);
115 void ft_board_setup(void *blob, bd_t *bd)
118 * For now, we simply always add the simplefb DT node. Later, we
119 * should be more intelligent, and e.g. only do this if no enabled DT
120 * node exists for the "real" graphics driver.
122 lcd_dt_simplefb_add_node(blob);