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authorfishsoupisgood <github@madingley.org>2019-04-29 01:17:54 +0100
committerfishsoupisgood <github@madingley.org>2019-05-27 03:43:43 +0100
commit3f2546b2ef55b661fd8dd69682b38992225e86f6 (patch)
tree65ca85f13617aee1dce474596800950f266a456c /roms/u-boot/board/raspberrypi
downloadqemu-master.tar.gz
qemu-master.tar.bz2
qemu-master.zip
Initial import of qemu-2.4.1HEADmaster
Diffstat (limited to 'roms/u-boot/board/raspberrypi')
-rw-r--r--roms/u-boot/board/raspberrypi/rpi_b/Makefile15
-rw-r--r--roms/u-boot/board/raspberrypi/rpi_b/rpi_b.c123
2 files changed, 138 insertions, 0 deletions
diff --git a/roms/u-boot/board/raspberrypi/rpi_b/Makefile b/roms/u-boot/board/raspberrypi/rpi_b/Makefile
new file mode 100644
index 00000000..7e9bfbff
--- /dev/null
+++ b/roms/u-boot/board/raspberrypi/rpi_b/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_b.o
diff --git a/roms/u-boot/board/raspberrypi/rpi_b/rpi_b.c b/roms/u-boot/board/raspberrypi/rpi_b/rpi_b.c
new file mode 100644
index 00000000..f33fae91
--- /dev/null
+++ b/roms/u-boot/board/raspberrypi/rpi_b/rpi_b.c
@@ -0,0 +1,123 @@
+/*
+ * (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 <lcd.h>
+#include <asm/arch/mbox.h>
+#include <asm/arch/sdhci.h>
+#include <asm/global_data.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+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_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;
+};
+
+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 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;
+}
+
+int board_init(void)
+{
+ gd->bd->bi_boot_params = 0x100;
+
+ return power_on_module(BCM2835_MBOX_POWER_DEVID_USB_HCD);
+}
+
+int board_mmc_init(void)
+{
+ 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);
+}
+
+void 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);
+}