^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 © 2011 Tony Breeds IBM Corporation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Based on earlier code:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright (C) Paul Mackerras 1997.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Matt Porter <mporter@kernel.crashing.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Copyright 2002-2005 MontaVista Software Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) * Eugene Surovegin <eugene.surovegin@zultys.com> or <ebs@ebshome.net>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * Copyright (c) 2003, 2004 Zultys Technologies
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * Copyright 2007 David Gibson, IBM Corporation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * Copyright 2010 Ben. Herrenschmidt, IBM Corporation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * Copyright © 2011 David Kleikamp IBM Corporation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <stdarg.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <stddef.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include "types.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include "elf.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include "string.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include "stdio.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include "page.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include "ops.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include "reg.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include "io.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include "dcr.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include "4xx.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include "44x.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include "libfdt.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) BSS_STACK(4096);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define MAX_RANKS 0x4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define DDR3_MR0CF 0x80010011U
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) static unsigned long long ibm_currituck_memsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) static unsigned long long ibm_currituck_detect_memsize(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) u32 reg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) unsigned i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) unsigned long long memsize = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) for(i = 0; i < MAX_RANKS; i++){
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) reg = mfdcrx(DDR3_MR0CF + i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) if (!(reg & 1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) reg &= 0x0000f000;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) reg >>= 12;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) memsize += (0x800000ULL << reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) return memsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) static void ibm_currituck_fixups(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) void *devp = finddevice("/");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) u32 dma_ranges[7];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) dt_fixup_memory(0x0ULL, ibm_currituck_memsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) while ((devp = find_node_by_devtype(devp, "pci"))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) if (getprop(devp, "dma-ranges", dma_ranges, sizeof(dma_ranges)) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) printf("%s: Failed to get dma-ranges\r\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) dma_ranges[5] = ibm_currituck_memsize >> 32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) dma_ranges[6] = ibm_currituck_memsize & 0xffffffffUL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) setprop(devp, "dma-ranges", dma_ranges, sizeof(dma_ranges));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) #define SPRN_PIR 0x11E /* Processor Identification Register */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) void platform_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) unsigned long end_of_ram, avail_ram;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) u32 pir_reg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) int node, size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) const u32 *timebase;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) ibm_currituck_memsize = ibm_currituck_detect_memsize();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) if (ibm_currituck_memsize >> 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) end_of_ram = ~0UL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) end_of_ram = ibm_currituck_memsize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) avail_ram = end_of_ram - (unsigned long)_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) simple_alloc_init(_end, avail_ram, 128, 64);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) platform_ops.fixups = ibm_currituck_fixups;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) platform_ops.exit = ibm44x_dbcr_reset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) pir_reg = mfspr(SPRN_PIR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) /* Make sure FDT blob is sane */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) if (fdt_check_header(_dtb_start) != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) fatal("Invalid device tree blob\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) node = fdt_node_offset_by_prop_value(_dtb_start, -1, "device_type",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) "cpu", sizeof("cpu"));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) if (!node)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) fatal("Cannot find cpu node\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) timebase = fdt_getprop(_dtb_start, node, "timebase-frequency", &size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) if (timebase && (size == 4))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) timebase_period_ns = 1000000000 / *timebase;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) fdt_set_boot_cpuid_phys(_dtb_start, pir_reg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) fdt_init(_dtb_start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) serial_console_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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