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d422c6c064
When building xway_defconfig with clang:
arch/mips/lantiq/prom.c:82:23: error: array comparison always evaluates
to true [-Werror,-Wtautological-compare]
else if (__dtb_start != __dtb_end)
^
1 error generated.
These are not true arrays, they are linker defined symbols, which are
just addresses. Using the address of operator silences the warning
and does not change the resulting assembly with either clang/ld.lld
or gcc/ld (tested with diff + objdump -Dr). Do the same thing across
the entire MIPS subsystem to ensure there are no more warnings around
this type of comparison.
Link: https://github.com/ClangBuiltLinux/linux/issues/1232
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
114 lines
2.4 KiB
C
114 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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*
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* Copyright (C) 2010 John Crispin <john@phrozen.org>
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*/
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#include <linux/export.h>
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#include <linux/clk.h>
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#include <linux/memblock.h>
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#include <linux/of_fdt.h>
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#include <asm/bootinfo.h>
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#include <asm/time.h>
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#include <asm/prom.h>
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#include <lantiq.h>
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#include "prom.h"
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#include "clk.h"
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/* access to the ebu needs to be locked between different drivers */
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DEFINE_SPINLOCK(ebu_lock);
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EXPORT_SYMBOL_GPL(ebu_lock);
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/*
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* This is needed by the VPE loader code, just set it to 0 and assume
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* that the firmware hardcodes this value to something useful.
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*/
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unsigned long physical_memsize = 0L;
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/*
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* this struct is filled by the soc specific detection code and holds
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* information about the specific soc type, revision and name
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*/
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static struct ltq_soc_info soc_info;
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const char *get_system_type(void)
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{
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return soc_info.sys_type;
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}
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int ltq_soc_type(void)
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{
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return soc_info.type;
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}
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void __init prom_free_prom_memory(void)
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{
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}
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static void __init prom_init_cmdline(void)
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{
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int argc = fw_arg0;
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char **argv = (char **) KSEG1ADDR(fw_arg1);
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int i;
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arcs_cmdline[0] = '\0';
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for (i = 0; i < argc; i++) {
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char *p = (char *) KSEG1ADDR(argv[i]);
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if (CPHYSADDR(p) && *p) {
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strlcat(arcs_cmdline, p, sizeof(arcs_cmdline));
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strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline));
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}
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}
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}
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void __init plat_mem_setup(void)
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{
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void *dtb;
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ioport_resource.start = IOPORT_RESOURCE_START;
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ioport_resource.end = IOPORT_RESOURCE_END;
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iomem_resource.start = IOMEM_RESOURCE_START;
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iomem_resource.end = IOMEM_RESOURCE_END;
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set_io_port_base((unsigned long) KSEG1);
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if (fw_passed_dtb) /* UHI interface */
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dtb = (void *)fw_passed_dtb;
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else if (&__dtb_start != &__dtb_end)
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dtb = (void *)__dtb_start;
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else
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panic("no dtb found");
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/*
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* Load the devicetree. This causes the chosen node to be
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* parsed resulting in our memory appearing
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*/
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__dt_setup_arch(dtb);
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}
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void __init device_tree_init(void)
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{
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unflatten_and_copy_device_tree();
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}
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void __init prom_init(void)
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{
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/* call the soc specific detetcion code and get it to fill soc_info */
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ltq_soc_detect(&soc_info);
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snprintf(soc_info.sys_type, LTQ_SYS_TYPE_LEN - 1, "%s rev %s",
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soc_info.name, soc_info.rev_type);
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soc_info.sys_type[LTQ_SYS_TYPE_LEN - 1] = '\0';
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pr_info("SoC: %s\n", soc_info.sys_type);
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prom_init_cmdline();
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#if defined(CONFIG_MIPS_MT_SMP)
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if (register_vsmp_smp_ops())
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panic("failed to register_vsmp_smp_ops()");
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#endif
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}
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