Microblaze patches for 4.18-rc3
- Fix architecture gpio heart beat code - Add new syscalls - Remove unused xlnx,compound handling - Remove platform.c -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEABECAAYFAlszIKkACgkQykllyylKDCF3FwCfd24uiViDIPWaexDsw7ThMPUQ vVsAoJtI8CFSIql6Tz4qBUX3mon1RlXh =Vii4 -----END PGP SIGNATURE----- Merge tag 'microblaze-v4.18-rc3' of git://git.monstr.eu/linux-2.6-microblaze Pull microblaze fixes from Michal Simek: - fix architecture gpio heart beat code - add new syscalls - remove unused xlnx,compound handling - remove platform.c * tag 'microblaze-v4.18-rc3' of git://git.monstr.eu/linux-2.6-microblaze: microblaze: consolidate GPIO reset handling microblaze: remove unecessary of_platform_bus_probe call microblaze: Add new syscalls io_pgetevents and rseq microblaze: Remove architecture heart beat code microblaze: heartbeat: fix missing prom.h include
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commit
22c3b1521a
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@ -8,11 +8,4 @@ config TRACE_IRQFLAGS_SUPPORT
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source "lib/Kconfig.debug"
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config HEART_BEAT
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bool "Heart beat function for kernel"
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default n
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help
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This option turns on/off heart beat kernel functionality.
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First GPIO node is taken.
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endmenu
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@ -19,15 +19,10 @@ extern char cmd_line[COMMAND_LINE_SIZE];
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extern char *klimit;
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void microblaze_heartbeat(void);
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void microblaze_setup_heartbeat(void);
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# ifdef CONFIG_MMU
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extern void mmu_reset(void);
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# endif /* CONFIG_MMU */
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extern void of_platform_reset_gpio_probe(void);
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void time_init(void);
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void init_IRQ(void);
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void machine_early_init(const char *cmdline, unsigned int ram,
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@ -38,6 +38,6 @@
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#endif /* __ASSEMBLY__ */
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#define __NR_syscalls 399
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#define __NR_syscalls 401
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#endif /* _ASM_MICROBLAZE_UNISTD_H */
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@ -415,5 +415,7 @@
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#define __NR_pkey_alloc 396
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#define __NR_pkey_free 397
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#define __NR_statx 398
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#define __NR_io_pgetevents 399
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#define __NR_rseq 400
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#endif /* _UAPI_ASM_MICROBLAZE_UNISTD_H */
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@ -8,7 +8,6 @@ ifdef CONFIG_FUNCTION_TRACER
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CFLAGS_REMOVE_timer.o = -pg
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CFLAGS_REMOVE_intc.o = -pg
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CFLAGS_REMOVE_early_printk.o = -pg
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CFLAGS_REMOVE_heartbeat.o = -pg
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CFLAGS_REMOVE_ftrace.o = -pg
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CFLAGS_REMOVE_process.o = -pg
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endif
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@ -17,12 +16,11 @@ extra-y := head.o vmlinux.lds
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obj-y += dma.o exceptions.o \
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hw_exception_handler.o irq.o \
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platform.o process.o prom.o ptrace.o \
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process.o prom.o ptrace.o \
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reset.o setup.o signal.o sys_microblaze.o timer.o traps.o unwind.o
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obj-y += cpu/
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obj-$(CONFIG_HEART_BEAT) += heartbeat.o
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obj-$(CONFIG_MODULES) += microblaze_ksyms.o module.o
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obj-$(CONFIG_MMU) += misc.o
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obj-$(CONFIG_STACKTRACE) += stacktrace.o
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@ -1,72 +0,0 @@
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/*
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* Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu>
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* Copyright (C) 2007-2009 PetaLogix
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* Copyright (C) 2006 Atmark Techno, Inc.
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#include <linux/sched.h>
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#include <linux/sched/loadavg.h>
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#include <linux/io.h>
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#include <asm/setup.h>
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#include <asm/page.h>
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#include <asm/prom.h>
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static unsigned int base_addr;
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void microblaze_heartbeat(void)
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{
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static unsigned int cnt, period, dist;
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if (base_addr) {
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if (cnt == 0 || cnt == dist)
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out_be32(base_addr, 1);
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else if (cnt == 7 || cnt == dist + 7)
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out_be32(base_addr, 0);
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if (++cnt > period) {
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cnt = 0;
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/*
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* The hyperbolic function below modifies the heartbeat
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* period length in dependency of the current (5min)
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* load. It goes through the points f(0)=126, f(1)=86,
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* f(5)=51, f(inf)->30.
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*/
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period = ((672 << FSHIFT) / (5 * avenrun[0] +
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(7 << FSHIFT))) + 30;
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dist = period / 4;
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}
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}
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}
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void microblaze_setup_heartbeat(void)
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{
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struct device_node *gpio = NULL;
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int *prop;
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int j;
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const char * const gpio_list[] = {
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"xlnx,xps-gpio-1.00.a",
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NULL
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};
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for (j = 0; gpio_list[j] != NULL; j++) {
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gpio = of_find_compatible_node(NULL, NULL, gpio_list[j]);
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if (gpio)
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break;
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}
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if (gpio) {
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base_addr = be32_to_cpup(of_get_property(gpio, "reg", NULL));
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base_addr = (unsigned long) ioremap(base_addr, PAGE_SIZE);
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pr_notice("Heartbeat GPIO at 0x%x\n", base_addr);
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/* GPIO is configured as output */
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prop = (int *) of_get_property(gpio, "xlnx,is-bidir", NULL);
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if (prop)
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out_be32(base_addr + 4, 0);
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}
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}
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@ -1,29 +0,0 @@
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/*
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* Copyright 2008 Michal Simek <monstr@monstr.eu>
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*
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* based on virtex.c file
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*
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* Copyright 2007 Secret Lab Technologies Ltd.
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*
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* This file is licensed under the terms of the GNU General Public License
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* version 2. This program is licensed "as is" without any warranty of any
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* kind, whether express or implied.
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*/
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#include <linux/init.h>
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#include <linux/of_platform.h>
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#include <asm/setup.h>
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static struct of_device_id xilinx_of_bus_ids[] __initdata = {
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{ .compatible = "simple-bus", },
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{ .compatible = "xlnx,compound", },
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{}
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};
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static int __init microblaze_device_probe(void)
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{
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of_platform_bus_probe(NULL, xilinx_of_bus_ids, NULL);
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of_platform_reset_gpio_probe();
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return 0;
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}
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device_initcall(microblaze_device_probe);
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@ -18,7 +18,7 @@
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static int handle; /* reset pin handle */
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static unsigned int reset_val;
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void of_platform_reset_gpio_probe(void)
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static int of_platform_reset_gpio_probe(void)
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{
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int ret;
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handle = of_get_named_gpio(of_find_node_by_path("/"),
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@ -27,13 +27,13 @@ void of_platform_reset_gpio_probe(void)
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if (!gpio_is_valid(handle)) {
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pr_info("Skipping unavailable RESET gpio %d (%s)\n",
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handle, "reset");
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return;
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return -ENODEV;
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}
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ret = gpio_request(handle, "reset");
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if (ret < 0) {
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pr_info("GPIO pin is already allocated\n");
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return;
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return ret;
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}
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/* get current setup value */
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pr_info("RESET: Registered gpio device: %d, current val: %d\n",
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handle, reset_val);
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return;
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return 0;
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err:
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gpio_free(handle);
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return;
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return ret;
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}
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device_initcall(of_platform_reset_gpio_probe);
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static void gpio_system_reset(void)
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@ -400,3 +400,5 @@ ENTRY(sys_call_table)
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.long sys_pkey_alloc
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.long sys_pkey_free
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.long sys_statx
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.long sys_io_pgetevents
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.long sys_rseq
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@ -156,9 +156,6 @@ static inline void timer_ack(void)
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static irqreturn_t timer_interrupt(int irq, void *dev_id)
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{
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struct clock_event_device *evt = &clockevent_xilinx_timer;
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#ifdef CONFIG_HEART_BEAT
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microblaze_heartbeat();
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#endif
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timer_ack();
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evt->event_handler(evt);
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return IRQ_HANDLED;
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return ret;
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}
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#ifdef CONFIG_HEART_BEAT
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microblaze_setup_heartbeat();
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#endif
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ret = xilinx_clocksource_init();
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if (ret)
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return ret;
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