GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

2026-09-06 03:52:57 +08:00
commit b1928b41c0
21813 changed files with 4413081 additions and 0 deletions
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+/*
+ * Copyright (c) 2021, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <arch.h>
+#include <asm_macros.S>
+#include <platform_def.h>
+
+	.globl plat_is_my_cpu_primary
+	.globl plat_my_core_pos
+	.globl plat_mediatek_calc_core_pos
+
+func plat_is_my_cpu_primary
+	mrs	x0, mpidr_el1
+	and	x0, x0, #(MPIDR_CLUSTER_MASK | MPIDR_CPU_MASK)
+	cmp	x0, #PLAT_PRIMARY_CPU
+	cset	x0, eq
+	ret
+endfunc plat_is_my_cpu_primary
+
+	/* -----------------------------------------------------
+	 *  unsigned int plat_my_core_pos(void)
+	 *  This function uses the plat_mediatek_calc_core_pos()
+	 *  definition to get the index of the calling CPU.
+	 * -----------------------------------------------------
+	 */
+func plat_my_core_pos
+	mrs	x0, mpidr_el1
+	b	plat_mediatek_calc_core_pos
+endfunc plat_my_core_pos
+
+	/* -----------------------------------------------------
+	 * unsigned int plat_mediatek_calc_core_pos(u_register_t mpidr);
+	 *
+	 * In ARMv8.2, AFF2 is cluster id, AFF1 is core id and
+	 * AFF0 is thread id. There is only one cluster in ARMv8.2
+	 * and one thread in current implementation.
+	 *
+	 * With this function: CorePos = CoreID (AFF1)
+	 * we do it with x0 = (x0 >> 8) & 0xff
+	 * -----------------------------------------------------
+	 */
+func plat_mediatek_calc_core_pos
+	mov	x1, #MPIDR_AFFLVL_MASK
+	and	x0, x1, x0, lsr #MPIDR_AFF1_SHIFT
+	ret
+endfunc plat_mediatek_calc_core_pos
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2021-2022, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <lib/xlat_tables/xlat_tables_v2.h>
+
+#include <platform_def.h>
+
+/* Table of regions to map using the MMU.  */
+const mmap_region_t plat_mmap[] = {
+	/* for TF text, RO, RW */
+	MAP_REGION_FLAT(MTK_DEV_RNG0_BASE, MTK_DEV_RNG0_SIZE,
+			MT_DEVICE | MT_RW | MT_SECURE),
+	MAP_REGION_FLAT(MTK_DEV_RNG2_BASE, MTK_DEV_RNG2_SIZE,
+			MT_DEVICE | MT_RW | MT_SECURE),
+	MAP_REGION_FLAT(MTK_MCDI_SRAM_BASE, MTK_MCDI_SRAM_MAP_SIZE,
+			MT_DEVICE | MT_RW | MT_SECURE),
+	MAP_REGION_FLAT(DP_SEC_BASE, DP_SEC_SIZE,
+			MT_DEVICE | MT_RW | MT_SECURE),
+	MAP_REGION_FLAT(EDP_SEC_BASE, EDP_SEC_SIZE,
+			MT_DEVICE | MT_RW | MT_SECURE),
+	MAP_REGION_FLAT(APUSYS_SCTRL_REVISER_BASE, APUSYS_SCTRL_REVISER_SIZE,
+			MT_DEVICE | MT_RW | MT_SECURE),
+	MAP_REGION_FLAT(APUSYS_APU_S_S_4_BASE, APUSYS_APU_S_S_4_SIZE,
+			MT_DEVICE | MT_RW | MT_SECURE),
+	MAP_REGION_FLAT(APUSYS_APU_PLL_BASE, APUSYS_APU_PLL_SIZE,
+			MT_DEVICE | MT_RW | MT_SECURE),
+	MAP_REGION_FLAT(APUSYS_APU_ACC_BASE, APUSYS_APU_ACC_SIZE,
+			MT_DEVICE | MT_RW | MT_SECURE),
+	{ 0 }
+};
+
+/*******************************************************************************
+ * Macro generating the code for the function setting up the pagetables as per
+ * the platform memory map & initialize the mmu, for the given exception level
+ ******************************************************************************/
+void plat_configure_mmu_el3(uintptr_t total_base,
+			    uintptr_t total_size,
+			    uintptr_t ro_start,
+			    uintptr_t ro_limit)
+{
+	mmap_add_region(total_base, total_base, total_size,
+			MT_RW_DATA | MT_SECURE);
+	mmap_add_region(ro_start, ro_start, ro_limit - ro_start,
+			MT_CODE | MT_SECURE);
+	mmap_add(plat_mmap);
+	init_xlat_tables();
+	enable_mmu_el3(0);
+}
+
+unsigned int plat_get_syscnt_freq2(void)
+{
+	return SYS_COUNTER_FREQ_IN_TICKS;
+}