mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-12 22:26:16 +09:00
83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
85 lines
2.1 KiB
C
85 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2016 Linaro
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* Jon Medhurst <tixy@linaro.org>
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*
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* TC2 specific code for Versatile Express.
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*/
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#include <asm/armv7.h>
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#include <asm/io.h>
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#include <asm/u-boot.h>
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#include <common.h>
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#include <linux/libfdt.h>
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#define SCC_BASE 0x7fff0000
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bool armv7_boot_nonsec_default(void)
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{
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#ifdef CONFIG_ARMV7_BOOT_SEC_DEFAULT
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return false;
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#else
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/*
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* The Serial Configuration Controller (SCC) register at address 0x700
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* contains flags for configuring the behaviour of the Boot Monitor
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* (which CPUs execute from reset). Two of these bits are of interest:
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*
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* bit 12 = Use per-cpu mailboxes for power management
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* bit 13 = Power down the non-boot cluster
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*
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* It is only when both of these are false that U-Boot's current
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* implementation of 'nonsec' mode can work as expected because we
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* rely on getting all CPUs to execute _nonsec_init, so let's check that.
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*/
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return (readl((u32 *)(SCC_BASE + 0x700)) & ((1 << 12) | (1 << 13))) == 0;
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#endif
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}
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#ifdef CONFIG_OF_BOARD_SETUP
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int ft_board_setup(void *fdt, bd_t *bd)
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{
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int offset, tmp, len;
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const struct fdt_property *prop;
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const char *cci_compatible = "arm,cci-400-ctrl-if";
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#ifdef CONFIG_ARMV7_NONSEC
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if (!armv7_boot_nonsec())
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return 0;
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#else
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return 0;
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#endif
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/* Booting in nonsec mode, disable CCI access */
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offset = fdt_path_offset(fdt, "/cpus");
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if (offset < 0) {
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printf("couldn't find /cpus\n");
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return offset;
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}
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/* delete cci-control-port in each cpu node */
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for (tmp = fdt_first_subnode(fdt, offset); tmp >= 0;
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tmp = fdt_next_subnode(fdt, tmp))
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fdt_delprop(fdt, tmp, "cci-control-port");
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/* disable all ace cci slave ports */
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offset = fdt_node_offset_by_prop_value(fdt, offset, "compatible",
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cci_compatible, 20);
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while (offset > 0) {
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prop = fdt_get_property(fdt, offset, "interface-type",
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&len);
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if (!prop)
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continue;
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if (len < 4)
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continue;
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if (strcmp(prop->data, "ace"))
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continue;
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fdt_setprop_string(fdt, offset, "status", "disabled");
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offset = fdt_node_offset_by_prop_value(fdt, offset, "compatible",
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cci_compatible, 20);
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}
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return 0;
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}
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#endif /* CONFIG_OF_BOARD_SETUP */
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