Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2)  * This file is subject to the terms and conditions of the GNU General Public
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * License.  See the file "COPYING" in the main directory of this archive
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  * PROM library initialisation code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  * Copyright (C) 1996 David S. Miller (davem@davemloft.net)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <asm/bootinfo.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <asm/sgialib.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <asm/smp-ops.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #undef DEBUG_PROM_INIT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) /* Master romvec interface. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) struct linux_romvec *romvec;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #if defined(CONFIG_64BIT) && defined(CONFIG_FW_ARC32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) /* stack for calling 32bit ARC prom */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) u64 o32_stk[4096];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) void __init prom_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	PSYSTEM_PARAMETER_BLOCK pb = PROMBLOCK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	romvec = ROMVECTOR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	if (pb->magic != 0x53435241) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 		printk(KERN_CRIT "Aieee, bad prom vector magic %08lx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 		       (unsigned long) pb->magic);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 		while(1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 			;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	prom_init_cmdline(fw_arg0, (LONG *)fw_arg1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	prom_identify_arch();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	printk(KERN_INFO "PROMLIB: ARC firmware Version %d Revision %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 	       pb->ver, pb->rev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	prom_meminit();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #ifdef DEBUG_PROM_INIT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 	pr_info("Press a key to reboot\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	ArcRead(0, &c, 1, &cnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 	ArcEnterInteractiveMode();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) }