Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * init.c:  Initialize internal variables used by the PROM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *          library functions.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  * Copyright (C) 1996,1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/ctype.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <asm/openprom.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <asm/oplib.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) /* OBP version string. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) char prom_version[80];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) /* The root node of the prom device tree. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) int prom_stdout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) phandle prom_chosen_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) /* You must call prom_init() before you attempt to use any of the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)  * routines in the prom library.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)  * It gets passed the pointer to the PROM vector.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) extern void prom_cif_init(void *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) void __init prom_init(void *cif_handler)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	phandle node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	prom_cif_init(cif_handler);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	prom_chosen_node = prom_finddevice(prom_chosen_path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	if (!prom_chosen_node || (s32)prom_chosen_node == -1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 		prom_halt();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 	prom_stdout = prom_getint(prom_chosen_node, "stdout");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	node = prom_finddevice("/openprom");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	if (!node || (s32)node == -1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 		prom_halt();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 	prom_getstring(node, "version", prom_version, sizeof(prom_version));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 	prom_printf("\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) void __init prom_init_report(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 	printk("PROMLIB: Sun IEEE Boot Prom '%s'\n", prom_version);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 	printk("PROMLIB: Root node compatible: %s\n", prom_root_compatible);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) }