^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * IP32 basic setup
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * This file is subject to the terms and conditions of the GNU General Public
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * License. See the file "COPYING" in the main directory of this archive
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * for more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Copyright (C) 2000 Harald Koerfgen
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Copyright (C) 2002, 2003, 2005 Ilya A. Volynets
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * Copyright (C) 2006 Ralf Baechle <ralf@linux-mips.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/console.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/param.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <asm/bootinfo.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <asm/mipsregs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <asm/mmu_context.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <asm/sgialib.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <asm/time.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <asm/traps.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <asm/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <asm/ip32/crime.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <asm/ip32/mace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <asm/ip32/ip32_ints.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) extern void ip32_be_init(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) extern void crime_init(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #ifdef CONFIG_SGI_O2MACE_ETH
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) * This is taken care of in here 'cause they say using Arc later on is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) * problematic
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) extern char o2meth_eaddr[8];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) static inline unsigned char str2hexnum(unsigned char c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) if (c >= '0' && c <= '9')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) return c - '0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) if (c >= 'a' && c <= 'f')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) return c - 'a' + 10;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) return 0; /* foo */
^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) static inline void str2eaddr(unsigned char *ea, unsigned char *str)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) for (i = 0; i < 6; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) unsigned char num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) if(*str == ':')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) str++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) num = str2hexnum(*str++) << 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) num |= (str2hexnum(*str++));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) ea[i] = num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) /* An arbitrary time; this can be decreased if reliability looks good */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #define WAIT_MS 10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) void __init plat_time_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) printk(KERN_INFO "Calibrating system timer... ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) write_c0_count(0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) crime->timer = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) while (crime->timer < CRIME_MASTER_FREQ * WAIT_MS / 1000) ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) mips_hpt_frequency = read_c0_count() * 1000 / WAIT_MS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) printk("%d MHz CPU detected\n", mips_hpt_frequency * 2 / 1000000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) void __init plat_mem_setup(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) board_be_init = ip32_be_init;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) #ifdef CONFIG_SGI_O2MACE_ETH
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) char *mac = ArcGetEnvironmentVariable("eaddr");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) str2eaddr(o2meth_eaddr, mac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) #if defined(CONFIG_SERIAL_CORE_CONSOLE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) char* con = ArcGetEnvironmentVariable("console");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) if (con && *con == 'd') {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) static char options[8] __initdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) char *baud = ArcGetEnvironmentVariable("dbaud");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) if (baud)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) strcpy(options, baud);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) add_preferred_console("ttyS", *(con + 1) == '2' ? 1 : 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) baud ? options : NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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