^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Keystone2 based boards and SOC related code.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright 2013 Texas Instruments, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Cyril Chemparathy <cyril@ti.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Santosh Shilimkar <santosh.shillimkar@ti.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/dma-mapping.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/of_platform.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/of_address.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/memblock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <asm/setup.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <asm/mach/map.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <asm/mach/arch.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <asm/mach/time.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <asm/smp_plat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <asm/memory.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include "memory.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include "keystone.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #ifdef CONFIG_ARM_LPAE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) static int keystone_platform_notifier(struct notifier_block *nb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) unsigned long event, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) struct device *dev = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) if (event != BUS_NOTIFY_ADD_DEVICE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) return NOTIFY_DONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) if (!dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) return NOTIFY_BAD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) if (!dev->of_node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) int ret = dma_direct_set_offset(dev, KEYSTONE_HIGH_PHYS_START,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) KEYSTONE_LOW_PHYS_START,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) KEYSTONE_HIGH_PHYS_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) dev_err(dev, "set dma_offset%08llx%s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) KEYSTONE_HIGH_PHYS_START - KEYSTONE_LOW_PHYS_START,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) ret ? " failed" : "");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) return NOTIFY_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) static struct notifier_block platform_nb = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) .notifier_call = keystone_platform_notifier,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #endif /* CONFIG_ARM_LPAE */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) static void __init keystone_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #ifdef CONFIG_ARM_LPAE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) if (PHYS_OFFSET >= KEYSTONE_HIGH_PHYS_START)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) bus_register_notifier(&platform_bus_type, &platform_nb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) keystone_pm_runtime_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) static long long __init keystone_pv_fixup(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) long long offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) u64 mem_start, mem_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) mem_start = memblock_start_of_DRAM();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) mem_end = memblock_end_of_DRAM();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) /* nothing to do if we are running out of the <32-bit space */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) if (mem_start >= KEYSTONE_LOW_PHYS_START &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) mem_end <= KEYSTONE_LOW_PHYS_END)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) if (mem_start < KEYSTONE_HIGH_PHYS_START ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) mem_end > KEYSTONE_HIGH_PHYS_END) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) pr_crit("Invalid address space for memory (%08llx-%08llx)\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) mem_start, mem_end);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) offset = KEYSTONE_HIGH_PHYS_START - KEYSTONE_LOW_PHYS_START;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) /* Populate the arch idmap hook */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) arch_phys_to_idmap_offset = -offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) return offset;
^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) static const char *const keystone_match[] __initconst = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) "ti,k2hk",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) "ti,k2e",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) "ti,k2l",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) "ti,k2g",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) "ti,keystone",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) DT_MACHINE_START(KEYSTONE, "Keystone")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) #if defined(CONFIG_ZONE_DMA) && defined(CONFIG_ARM_LPAE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) .dma_zone_size = SZ_2G,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) .smp = smp_ops(keystone_smp_ops),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) .init_machine = keystone_init,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) .dt_compat = keystone_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) .pv_fixup = keystone_pv_fixup,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) MACHINE_END
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
3 Commits
0 Branches
0 Tags