^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright © 2013 Tony Breeds IBM Corporation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright © 2013 Alistair Popple IBM Corporation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Based on earlier code:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright (C) Paul Mackerras 1997.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Matt Porter <mporter@kernel.crashing.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * Copyright 2002-2005 MontaVista Software Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * Copyright (c) 2003, 2004 Zultys Technologies
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * Copyright 2007 David Gibson, IBM Corporation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * Copyright 2010 Ben. Herrenschmidt, IBM Corporation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * Copyright © 2011 David Kleikamp IBM Corporation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <stdarg.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <stddef.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include "types.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include "elf.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include "string.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include "stdlib.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include "stdio.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include "page.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include "ops.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include "reg.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include "io.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include "dcr.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include "4xx.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include "44x.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include "libfdt.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) BSS_STACK(4096);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define SPRN_PIR 0x11E /* Processor Identification Register */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define USERDATA_LEN 256 /* Length of userdata passed in by PIBS */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define MAX_RANKS 0x4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define DDR3_MR0CF 0x80010011U
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #define CCTL0_MCO2 0x8000080FU
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #define CCTL0_MCO3 0x80000810U
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #define CCTL0_MCO4 0x80000811U
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #define CCTL0_MCO5 0x80000812U
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #define CCTL0_MCO6 0x80000813U
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) static unsigned long long ibm_akebono_memsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) static long long unsigned mac_addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) static unsigned long long ibm_akebono_detect_memsize(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) u32 reg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) unsigned i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) unsigned long long memsize = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) for (i = 0; i < MAX_RANKS; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) reg = mfdcrx(DDR3_MR0CF + i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) if (!(reg & 1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) reg &= 0x0000f000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) reg >>= 12;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) memsize += (0x800000ULL << reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) return memsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) static void ibm_akebono_fixups(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) void *emac;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) u32 reg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) dt_fixup_memory(0x0ULL, ibm_akebono_memsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) /* Fixup the SD timeout frequency */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) mtdcrx(CCTL0_MCO4, 0x1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) /* Disable SD high-speed mode (which seems to be broken) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) reg = mfdcrx(CCTL0_MCO2) & ~0x2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) mtdcrx(CCTL0_MCO2, reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) /* Set the MAC address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) emac = finddevice("/plb/opb/ethernet");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) if (emac > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) if (mac_addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) setprop(emac, "local-mac-address",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) ((u8 *) &mac_addr) + 2 , 6);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) }
^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) void platform_init(char *userdata)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) unsigned long end_of_ram, avail_ram;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) u32 pir_reg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) int node, size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) const u32 *timebase;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) int len, i, userdata_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) char *end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) userdata[USERDATA_LEN - 1] = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) userdata_len = strlen(userdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) for (i = 0; i < userdata_len - 15; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) if (strncmp(&userdata[i], "local-mac-addr=", 15) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) if (i > 0 && userdata[i - 1] != ' ') {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) /* We've only found a substring ending
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) * with local-mac-addr so this isn't
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) * our mac address. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) mac_addr = strtoull(&userdata[i + 15], &end, 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) /* Remove the "local-mac-addr=<...>" from the kernel
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) * command line, including the tailing space if
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) * present. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) if (*end == ' ')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) end++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) len = ((int) end) - ((int) &userdata[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) memmove(&userdata[i], end,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) userdata_len - (len + i) + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) loader_info.cmdline = userdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) loader_info.cmdline_len = 256;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) ibm_akebono_memsize = ibm_akebono_detect_memsize();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) if (ibm_akebono_memsize >> 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) end_of_ram = ~0UL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) end_of_ram = ibm_akebono_memsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) avail_ram = end_of_ram - (unsigned long)_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) simple_alloc_init(_end, avail_ram, 128, 64);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) platform_ops.fixups = ibm_akebono_fixups;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) platform_ops.exit = ibm44x_dbcr_reset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) pir_reg = mfspr(SPRN_PIR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) /* Make sure FDT blob is sane */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) if (fdt_check_header(_dtb_start) != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) fatal("Invalid device tree blob\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) node = fdt_node_offset_by_prop_value(_dtb_start, -1, "device_type",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) "cpu", sizeof("cpu"));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) if (!node)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) fatal("Cannot find cpu node\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) timebase = fdt_getprop(_dtb_start, node, "timebase-frequency", &size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) if (timebase && (size == 4))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) timebase_period_ns = 1000000000 / *timebase;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) fdt_set_boot_cpuid_phys(_dtb_start, pir_reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) fdt_init(_dtb_start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) serial_console_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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