linux/arch/mips/generic/init.c
Paul Burton fb615d61b5 Update MIPS email addresses
MIPS will soon not be a part of Imagination Technologies, and as such
many @imgtec.com email addresses will no longer be valid. This patch
updates the addresses for those who:

 - Have 10 or more patches in mainline authored using an @imgtec.com
   email address, or any patches dated within the past year.

 - Are still with Imagination but leaving as part of the MIPS business
   unit, as determined from an internal email address list.

 - Haven't already updated their email address (ie. JamesH) or expressed
   a desire to be excluded (ie. Maciej).

 - Acked v2 or earlier of this patch, which leaves Deng-Cheng, Matt &
   myself.

New addresses are of the form firstname.lastname@mips.com, and all
verified against an internal email address list.  An entry is added to
.mailmap for each person such that get_maintainer.pl will report the new
addresses rather than @imgtec.com addresses which will soon be dead.

Instances of the affected addresses throughout the tree are then
mechanically replaced with the new @mips.com address.

Signed-off-by: Paul Burton <paul.burton@mips.com>
Cc: Deng-Cheng Zhu <dengcheng.zhu@imgtec.com>
Cc: Deng-Cheng Zhu <dengcheng.zhu@mips.com>
Acked-by: Dengcheng Zhu <dengcheng.zhu@mips.com>
Cc: Matt Redfearn <matt.redfearn@imgtec.com>
Cc: Matt Redfearn <matt.redfearn@mips.com>
Acked-by: Matt Redfearn <matt.redfearn@mips.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: trivial@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2017-11-03 09:02:30 -07:00

226 lines
4.7 KiB
C

/*
* Copyright (C) 2016 Imagination Technologies
* Author: Paul Burton <paul.burton@mips.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#include <linux/clk.h>
#include <linux/clk-provider.h>
#include <linux/clocksource.h>
#include <linux/init.h>
#include <linux/irqchip.h>
#include <linux/of_fdt.h>
#include <linux/of_platform.h>
#include <asm/bootinfo.h>
#include <asm/fw/fw.h>
#include <asm/irq_cpu.h>
#include <asm/machine.h>
#include <asm/mips-cps.h>
#include <asm/prom.h>
#include <asm/smp-ops.h>
#include <asm/time.h>
static __initdata const void *fdt;
static __initdata const struct mips_machine *mach;
static __initdata const void *mach_match_data;
void __init prom_init(void)
{
plat_get_fdt();
BUG_ON(!fdt);
}
void __init *plat_get_fdt(void)
{
const struct mips_machine *check_mach;
const struct of_device_id *match;
if (fdt)
/* Already set up */
return (void *)fdt;
if ((fw_arg0 == -2) && !fdt_check_header((void *)fw_arg1)) {
/*
* We booted using the UHI boot protocol, so we have been
* provided with the appropriate device tree for the board.
* Make use of it & search for any machine struct based upon
* the root compatible string.
*/
fdt = (void *)fw_arg1;
for_each_mips_machine(check_mach) {
match = mips_machine_is_compatible(check_mach, fdt);
if (match) {
mach = check_mach;
mach_match_data = match->data;
break;
}
}
} else if (IS_ENABLED(CONFIG_LEGACY_BOARDS)) {
/*
* We weren't booted using the UHI boot protocol, but do
* support some number of boards with legacy boot protocols.
* Attempt to find the right one.
*/
for_each_mips_machine(check_mach) {
if (!check_mach->detect)
continue;
if (!check_mach->detect())
continue;
mach = check_mach;
}
/*
* If we don't recognise the machine then we can't continue, so
* die here.
*/
BUG_ON(!mach);
/* Retrieve the machine's FDT */
fdt = mach->fdt;
}
return (void *)fdt;
}
#ifdef CONFIG_RELOCATABLE
void __init plat_fdt_relocated(void *new_location)
{
/*
* reset fdt as the cached value would point to the location
* before relocations happened and update the location argument
* if it was passed using UHI
*/
fdt = NULL;
if (fw_arg0 == -2)
fw_arg1 = (unsigned long)new_location;
}
#endif /* CONFIG_RELOCATABLE */
void __init plat_mem_setup(void)
{
if (mach && mach->fixup_fdt)
fdt = mach->fixup_fdt(fdt, mach_match_data);
strlcpy(arcs_cmdline, boot_command_line, COMMAND_LINE_SIZE);
__dt_setup_arch((void *)fdt);
}
void __init device_tree_init(void)
{
int err;
unflatten_and_copy_device_tree();
mips_cpc_probe();
err = register_cps_smp_ops();
if (err)
err = register_up_smp_ops();
}
int __init apply_mips_fdt_fixups(void *fdt_out, size_t fdt_out_size,
const void *fdt_in,
const struct mips_fdt_fixup *fixups)
{
int err;
err = fdt_open_into(fdt_in, fdt_out, fdt_out_size);
if (err) {
pr_err("Failed to open FDT\n");
return err;
}
for (; fixups->apply; fixups++) {
err = fixups->apply(fdt_out);
if (err) {
pr_err("Failed to apply FDT fixup \"%s\"\n",
fixups->description);
return err;
}
}
err = fdt_pack(fdt_out);
if (err)
pr_err("Failed to pack FDT\n");
return err;
}
void __init plat_time_init(void)
{
struct device_node *np;
struct clk *clk;
of_clk_init(NULL);
if (!cpu_has_counter) {
mips_hpt_frequency = 0;
} else if (mach && mach->measure_hpt_freq) {
mips_hpt_frequency = mach->measure_hpt_freq();
} else {
np = of_get_cpu_node(0, NULL);
if (!np) {
pr_err("Failed to get CPU node\n");
return;
}
clk = of_clk_get(np, 0);
if (IS_ERR(clk)) {
pr_err("Failed to get CPU clock: %ld\n", PTR_ERR(clk));
return;
}
mips_hpt_frequency = clk_get_rate(clk);
clk_put(clk);
switch (boot_cpu_type()) {
case CPU_20KC:
case CPU_25KF:
/* The counter runs at the CPU clock rate */
break;
default:
/* The counter runs at half the CPU clock rate */
mips_hpt_frequency /= 2;
break;
}
}
timer_probe();
}
void __init arch_init_irq(void)
{
struct device_node *intc_node;
intc_node = of_find_compatible_node(NULL, NULL,
"mti,cpu-interrupt-controller");
if (!cpu_has_veic && !intc_node)
mips_cpu_irq_init();
irqchip_init();
}
static int __init publish_devices(void)
{
if (!of_have_populated_dt())
panic("Device-tree not present");
if (of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL))
panic("Failed to populate DT");
return 0;
}
arch_initcall(publish_devices);
void __init prom_free_prom_memory(void)
{
}