^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * Big Endian PROM code for SNI RM machines
^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) 2005-2006 Florian Lohoff (flo@rfc822.org)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Copyright (C) 2005-2006 Thomas Bogendoerfer (tsbogend@alpha.franken.de)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/kernel.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/memblock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/console.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <asm/addrspace.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <asm/sni.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <asm/mipsprom.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <asm/mipsregs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <asm/bootinfo.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <asm/setup.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) /* special SNI prom calls */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * This does not exist in all proms - SINIX compares
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * the prom env variable "version" against "2.0008"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * or greater. If lesser it tries to probe interesting
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * registers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define PROM_GET_MEMCONF 58
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define PROM_GET_HWCONF 61
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define PROM_VEC (u64 *)CKSEG1ADDR(0x1fc00000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define PROM_ENTRY(x) (PROM_VEC + (x))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define ___prom_putchar ((int *(*)(int))PROM_ENTRY(PROM_PUTCHAR))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define ___prom_getenv ((char *(*)(char *))PROM_ENTRY(PROM_GETENV))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define ___prom_get_memconf ((void (*)(void *))PROM_ENTRY(PROM_GET_MEMCONF))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #define ___prom_get_hwconf ((u32 (*)(void))PROM_ENTRY(PROM_GET_HWCONF))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #ifdef CONFIG_64BIT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) /* O32 stack has to be 8-byte aligned. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) static u64 o32_stk[4096];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #define O32_STK (&o32_stk[ARRAY_SIZE(o32_stk)])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #define __PROM_O32(fun, arg) fun arg __asm__(#fun); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) __asm__(#fun " = call_o32")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) int __PROM_O32(__prom_putchar, (int *(*)(int), void *, int));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) char *__PROM_O32(__prom_getenv, (char *(*)(char *), void *, char *));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) void __PROM_O32(__prom_get_memconf, (void (*)(void *), void *, void *));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) u32 __PROM_O32(__prom_get_hwconf, (u32 (*)(void), void *));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) #define _prom_putchar(x) __prom_putchar(___prom_putchar, O32_STK, x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #define _prom_getenv(x) __prom_getenv(___prom_getenv, O32_STK, x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) #define _prom_get_memconf(x) __prom_get_memconf(___prom_get_memconf, O32_STK, x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) #define _prom_get_hwconf() __prom_get_hwconf(___prom_get_hwconf, O32_STK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #define _prom_putchar(x) ___prom_putchar(x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #define _prom_getenv(x) ___prom_getenv(x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) #define _prom_get_memconf(x) ___prom_get_memconf(x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) #define _prom_get_hwconf(x) ___prom_get_hwconf(x)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) void prom_putchar(char c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) _prom_putchar(c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) char *prom_getenv(char *s)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) return _prom_getenv(s);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) void *prom_get_hwconf(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) u32 hwconf = _prom_get_hwconf();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) if (hwconf == 0xffffffff)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) return (void *)CKSEG1ADDR(hwconf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) void __init prom_free_prom_memory(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) * /proc/cpuinfo system type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) char *system_type = "Unknown";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) const char *get_system_type(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) return system_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) static void __init sni_mem_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) int i, memsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) struct membank {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) u32 size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) u32 base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) u32 size2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) u32 pad1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) u32 pad2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) } memconf[8];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) int brd_type = *(unsigned char *)SNI_IDPROM_BRDTYPE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) /* MemSIZE from prom in 16MByte chunks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) memsize = *((unsigned char *) SNI_IDPROM_MEMSIZE) * 16;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) pr_debug("IDProm memsize: %u MByte\n", memsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) /* get memory bank layout from prom */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) _prom_get_memconf(&memconf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) pr_debug("prom_get_mem_conf memory configuration:\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) for (i = 0; i < 8 && memconf[i].size; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) if (brd_type == SNI_BRD_PCI_TOWER ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) brd_type == SNI_BRD_PCI_TOWER_CPLUS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) if (memconf[i].base >= 0x20000000 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) memconf[i].base < 0x30000000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) memconf[i].base -= 0x20000000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) pr_debug("Bank%d: %08x @ %08x\n", i,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) memconf[i].size, memconf[i].base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) memblock_add(memconf[i].base, memconf[i].size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) void __init prom_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) int argc = fw_arg0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) u32 *argv = (u32 *)CKSEG0ADDR(fw_arg1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) sni_mem_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) /* copy prom cmdline parameters to kernel cmdline */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) for (i = 1; i < argc; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) strcat(arcs_cmdline, (char *)CKSEG0ADDR(argv[i]));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) if (i < (argc - 1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) strcat(arcs_cmdline, " ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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