2 * (C) Copyright 2012 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.
18 #include <asm/arch/mbox.h>
19 #include <asm/arch/sdhci.h>
20 #include <asm/global_data.h>
22 DECLARE_GLOBAL_DATA_PTR;
24 struct msg_get_arm_mem {
25 struct bcm2835_mbox_hdr hdr;
26 struct bcm2835_mbox_tag_get_arm_mem get_arm_mem;
30 struct msg_get_clock_rate {
31 struct bcm2835_mbox_hdr hdr;
32 struct bcm2835_mbox_tag_get_clock_rate get_clock_rate;
38 ALLOC_ALIGN_BUFFER(struct msg_get_arm_mem, msg, 1, 16);
41 BCM2835_MBOX_INIT_HDR(msg);
42 BCM2835_MBOX_INIT_TAG(&msg->get_arm_mem, GET_ARM_MEMORY);
44 ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg->hdr);
46 printf("bcm2835: Could not query ARM memory size\n");
50 gd->ram_size = msg->get_arm_mem.body.resp.mem_size;
57 gd->bd->bi_boot_params = 0x100;
62 int board_mmc_init(void)
64 ALLOC_ALIGN_BUFFER(struct msg_get_clock_rate, msg_clk, 1, 16);
67 BCM2835_MBOX_INIT_HDR(msg_clk);
68 BCM2835_MBOX_INIT_TAG(&msg_clk->get_clock_rate, GET_CLOCK_RATE);
69 msg_clk->get_clock_rate.body.req.clock_id = BCM2835_MBOX_CLOCK_ID_EMMC;
71 ret = bcm2835_mbox_call_prop(BCM2835_MBOX_PROP_CHAN, &msg_clk->hdr);
73 printf("bcm2835: Could not query eMMC clock rate\n");
77 return bcm2835_sdhci_init(BCM2835_SDHCI_BASE,
78 msg_clk->get_clock_rate.body.resp.rate_hz);