| /* |
| * Copyright (C) 2018 Marvell International Ltd. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| * https://spdx.org/licenses |
| */ |
| |
| #include <asm_macros.S> |
| #include <cortex_a72.h> |
| #include <marvell_def.h> |
| #include <platform_def.h> |
| #ifndef PLAT_a3700 |
| #include <ccu.h> |
| #include <cache_llc.h> |
| #endif |
| |
| .weak plat_marvell_calc_core_pos |
| .weak plat_my_core_pos |
| .globl plat_crash_console_init |
| .globl plat_crash_console_putc |
| .globl platform_mem_init |
| .globl disable_mmu_dcache |
| .globl invalidate_tlb_all |
| .globl platform_unmap_sram |
| .globl disable_sram |
| .globl disable_icache |
| .globl invalidate_icache_all |
| .globl marvell_exit_bootrom |
| .globl ca72_l2_enable_unique_clean |
| |
| /* ----------------------------------------------------- |
| * unsigned int plat_my_core_pos(void) |
| * This function uses the plat_marvell_calc_core_pos() |
| * definition to get the index of the calling CPU. |
| * ----------------------------------------------------- |
| */ |
| func plat_my_core_pos |
| mrs x0, mpidr_el1 |
| b plat_marvell_calc_core_pos |
| endfunc plat_my_core_pos |
| |
| /* ----------------------------------------------------- |
| * unsigned int plat_marvell_calc_core_pos(uint64_t mpidr) |
| * Helper function to calculate the core position. |
| * With this function: CorePos = (ClusterId * 2) + |
| * CoreId |
| * ----------------------------------------------------- |
| */ |
| func plat_marvell_calc_core_pos |
| and x1, x0, #MPIDR_CPU_MASK |
| and x0, x0, #MPIDR_CLUSTER_MASK |
| add x0, x1, x0, LSR #7 |
| ret |
| endfunc plat_marvell_calc_core_pos |
| |
| /* --------------------------------------------- |
| * int plat_crash_console_init(void) |
| * Function to initialize the crash console |
| * without a C Runtime to print crash report. |
| * Clobber list : x0, x1, x2 |
| * --------------------------------------------- |
| */ |
| func plat_crash_console_init |
| mov_imm x0, PLAT_MARVELL_CRASH_UART_BASE |
| mov_imm x1, PLAT_MARVELL_CRASH_UART_CLK_IN_HZ |
| mov_imm x2, MARVELL_CONSOLE_BAUDRATE |
| b console_core_init |
| endfunc plat_crash_console_init |
| |
| /* --------------------------------------------- |
| * int plat_crash_console_putc(int c) |
| * Function to print a character on the crash |
| * console without a C Runtime. |
| * Clobber list : x1, x2 |
| * --------------------------------------------- |
| */ |
| func plat_crash_console_putc |
| mov_imm x1, PLAT_MARVELL_CRASH_UART_BASE |
| b console_core_putc |
| endfunc plat_crash_console_putc |
| |
| /* --------------------------------------------------------------------- |
| * We don't need to carry out any memory initialization on ARM |
| * platforms. The Secure RAM is accessible straight away. |
| * --------------------------------------------------------------------- |
| */ |
| func platform_mem_init |
| ret |
| endfunc platform_mem_init |
| |
| /* ----------------------------------------------------- |
| * Disable icache, dcache, and MMU |
| * ----------------------------------------------------- |
| */ |
| func disable_mmu_dcache |
| mrs x0, sctlr_el3 |
| bic x0, x0, 0x1 /* M bit - MMU */ |
| bic x0, x0, 0x4 /* C bit - Dcache L1 & L2 */ |
| msr sctlr_el3, x0 |
| isb |
| b mmu_off |
| mmu_off: |
| ret |
| endfunc disable_mmu_dcache |
| |
| /* ----------------------------------------------------- |
| * Disable all TLB entries |
| * ----------------------------------------------------- |
| */ |
| func invalidate_tlb_all |
| tlbi alle3 |
| dsb sy |
| isb |
| ret |
| endfunc invalidate_tlb_all |
| |
| /* ----------------------------------------------------- |
| * Disable the i cache |
| * ----------------------------------------------------- |
| */ |
| func disable_icache |
| mrs x0, sctlr_el3 |
| bic x0, x0, 0x1000 /* I bit - Icache L1 & L2 */ |
| msr sctlr_el3, x0 |
| isb |
| ret |
| endfunc disable_icache |
| |
| /* ----------------------------------------------------- |
| * Disable all of the i caches |
| * ----------------------------------------------------- |
| */ |
| func invalidate_icache_all |
| ic ialluis |
| isb sy |
| ret |
| endfunc invalidate_icache_all |
| |
| /* ----------------------------------------------------- |
| * Clear the SRAM enabling bit to unmap SRAM |
| * ----------------------------------------------------- |
| */ |
| func platform_unmap_sram |
| ldr x0, =CCU_SRAM_WIN_CR |
| str wzr, [x0] |
| ret |
| endfunc platform_unmap_sram |
| |
| /* ----------------------------------------------------- |
| * Disable the SRAM |
| * ----------------------------------------------------- |
| */ |
| func disable_sram |
| /* Disable the line lockings. They must be disabled expictly |
| * or the OS will have problems using the cache */ |
| ldr x1, =MASTER_LLC_TC0_LOCK |
| str wzr, [x1] |
| |
| /* Invalidate all ways */ |
| ldr w1, =LLC_WAY_MASK |
| ldr x0, =MASTER_L2X0_INV_WAY |
| str w1, [x0] |
| |
| /* Finally disable LLC */ |
| ldr x0, =MASTER_LLC_CTRL |
| str wzr, [x0] |
| |
| ret |
| endfunc disable_sram |
| |
| /* ----------------------------------------------------- |
| * Operation when exit bootROM: |
| * Disable the MMU |
| * Disable and invalidate the dcache |
| * Unmap and disable the SRAM |
| * Disable and invalidate the icache |
| * ----------------------------------------------------- |
| */ |
| func marvell_exit_bootrom |
| /* Save the system restore address */ |
| mov x28, x0 |
| |
| /* Close the caches and MMU */ |
| bl disable_mmu_dcache |
| |
| /* |
| * There is nothing important in the caches now, |
| * so invalidate them instead of cleaning. |
| */ |
| adr x0, __RW_START__ |
| adr x1, __RW_END__ |
| sub x1, x1, x0 |
| bl inv_dcache_range |
| bl invalidate_tlb_all |
| |
| /* |
| * Clean the memory mapping of SRAM |
| * the DDR mapping will remain to enable boot image to execute |
| */ |
| bl platform_unmap_sram |
| |
| /* Disable the SRAM */ |
| bl disable_sram |
| |
| /* Disable and invalidate icache */ |
| bl disable_icache |
| bl invalidate_icache_all |
| |
| mov x0, x28 |
| br x0 |
| endfunc marvell_exit_bootrom |
| |
| /* |
| * Enable L2 UniqueClean evictions with data |
| */ |
| func ca72_l2_enable_unique_clean |
| |
| mrs x0, CORTEX_A72_L2ACTLR_EL1 |
| orr x0, x0, #CORTEX_A72_L2ACTLR_ENABLE_UNIQUE_CLEAN |
| msr CORTEX_A72_L2ACTLR_EL1, x0 |
| |
| ret |
| endfunc ca72_l2_enable_unique_clean |
