Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2)  * Copyright (C) 2012-2014 Broadcom Corporation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * This program is free software; you can redistribute it and/or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * modify it under the terms of the GNU General Public License as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  * published by the Free Software Foundation version 2.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  * This program is distributed "as is" WITHOUT ANY WARRANTY of any
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  * kind, whether express or implied; without even the implied warranty
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)  * GNU General Public License for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/clocksource.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/of_address.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <asm/mach/arch.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include "kona_l2_cache.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define SECWDOG_OFFSET			0x00000000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define SECWDOG_RESERVED_MASK		0xe2000000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define SECWDOG_WD_LOAD_FLAG_MASK	0x10000000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define SECWDOG_EN_MASK			0x08000000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define SECWDOG_SRSTEN_MASK		0x04000000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define SECWDOG_CLKS_SHIFT		20
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #define SECWDOG_COUNT_SHIFT		0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) static void bcm281xx_restart(enum reboot_mode mode, const char *cmd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	uint32_t val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	void __iomem *base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	struct device_node *np_wdog;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	np_wdog = of_find_compatible_node(NULL, NULL, "brcm,kona-wdt");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	if (!np_wdog) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 		pr_emerg("Couldn't find brcm,kona-wdt\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	base = of_iomap(np_wdog, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	of_node_put(np_wdog);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	if (!base) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 		pr_emerg("Couldn't map brcm,kona-wdt\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	/* Enable watchdog with short timeout (244us). */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	val = readl(base + SECWDOG_OFFSET);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 	val &= SECWDOG_RESERVED_MASK | SECWDOG_WD_LOAD_FLAG_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 	val |= SECWDOG_EN_MASK | SECWDOG_SRSTEN_MASK |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 		(0x15 << SECWDOG_CLKS_SHIFT) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 		(0x8 << SECWDOG_COUNT_SHIFT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 	writel(val, base + SECWDOG_OFFSET);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 	/* Wait for reset */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 	while (1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) static void __init bcm281xx_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 	kona_l2_cache_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) static const char * const bcm281xx_dt_compat[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 	"brcm,bcm11351",	/* Have to use the first number upstreamed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 	NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) DT_MACHINE_START(BCM281XX_DT, "BCM281xx Broadcom Application Processor")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 	.init_machine = bcm281xx_init,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 	.restart = bcm281xx_restart,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) 	.dt_compat = bcm281xx_dt_compat,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) MACHINE_END