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author | Andre Przywara <andre.przywara@arm.com> | 2020-03-12 14:20:04 +0000 |
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committer | Andre Przywara <andre.przywara@arm.com> | 2020-04-01 15:56:26 +0100 |
commit | 07aa0c7e0e13db4b22de135247b4aa3a5b18f15b (patch) | |
tree | 74d7c12cffcbc0078083fababe1711fb2c280e36 /plat/rpi | |
parent | 0a43db84af8cafaf35155d0e96e679b79a775272 (diff) | |
download | trusted-firmware-a-07aa0c7e0e13db4b22de135247b4aa3a5b18f15b.tar.gz |
rpi: move plat_helpers.S to common
The plat_helpers.S file was almost identical between its RPi3 and RPi4
versions. Unify the two files, moving it into the common/ directory.
This adds a plat_rpi_get_model() function, which can be used to trigger
RPi4 specific action, detected at runtime. We use that to do the RPi4
specific L2 cache initialisation.
Change-Id: I2295704fd6dde7c76fe83b6d98c7bf998d4bf074
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Diffstat (limited to 'plat/rpi')
-rw-r--r-- | plat/rpi/common/aarch64/plat_helpers.S (renamed from plat/rpi/rpi4/aarch64/plat_helpers.S) | 33 | ||||
-rw-r--r-- | plat/rpi/common/include/rpi_shared.h | 2 | ||||
-rw-r--r-- | plat/rpi/rpi3/aarch64/plat_helpers.S | 163 | ||||
-rw-r--r-- | plat/rpi/rpi3/include/platform_def.h | 2 | ||||
-rw-r--r-- | plat/rpi/rpi3/platform.mk | 4 | ||||
-rw-r--r-- | plat/rpi/rpi4/include/platform_def.h | 2 | ||||
-rw-r--r-- | plat/rpi/rpi4/platform.mk | 2 |
7 files changed, 37 insertions, 171 deletions
diff --git a/plat/rpi/rpi4/aarch64/plat_helpers.S b/plat/rpi/common/aarch64/plat_helpers.S index fac1b2075a..93c8f7f7f3 100644 --- a/plat/rpi/rpi4/aarch64/plat_helpers.S +++ b/plat/rpi/common/aarch64/plat_helpers.S @@ -1,5 +1,5 @@ /* - * Copyright (c) 2015-2019, ARM Limited and Contributors. All rights reserved. + * Copyright (c) 2015-2020, ARM Limited and Contributors. All rights reserved. * * SPDX-License-Identifier: BSD-3-Clause */ @@ -20,6 +20,7 @@ .globl plat_reset_handler .globl plat_rpi3_calc_core_pos .globl plat_secondary_cold_boot_setup + .globl plat_rpi_get_model /* ----------------------------------------------------- * unsigned int plat_my_core_pos(void) @@ -56,7 +57,7 @@ endfunc plat_rpi3_calc_core_pos func plat_is_my_cpu_primary mrs x0, mpidr_el1 and x0, x0, #(MPIDR_CLUSTER_MASK | MPIDR_CPU_MASK) - cmp x0, #RPI4_PRIMARY_CPU + cmp x0, #RPI_PRIMARY_CPU cset w0, eq ret endfunc plat_is_my_cpu_primary @@ -165,10 +166,37 @@ func plat_crash_console_flush endfunc plat_crash_console_flush /* --------------------------------------------- + * int plat_rpi_get_model() + * Macro to determine whether we are running on + * a Raspberry Pi 3 or 4. Just checks the MIDR for + * being either a Cortex-A72 or a Cortex-A53. + * Out : return 4 if RPi4, 3 otherwise. + * Clobber list : x0 + * --------------------------------------------- + */ + .macro _plat_rpi_get_model + mrs x0, midr_el1 + and x0, x0, #0xf0 /* Isolate low byte of part number */ + cmp w0, #0x80 /* Cortex-A72 (RPi4) is 0xd08, A53 is 0xd03 */ + mov w0, #3 + csinc w0, w0, w0, ne + .endm + + func plat_rpi_get_model + _plat_rpi_get_model + ret + endfunc plat_rpi_get_model + + /* --------------------------------------------- * void plat_reset_handler(void); * --------------------------------------------- */ func plat_reset_handler + /* L2 cache setup only needed on RPi4 */ + _plat_rpi_get_model + cmp w0, #4 + b.ne 1f + /* ------------------------------------------------ * Set L2 read/write cache latency: * - L2 Data RAM latency: 3 cycles (0b010) @@ -181,5 +209,6 @@ func plat_reset_handler msr CORTEX_A72_L2CTLR_EL1, x0 isb +1: ret endfunc plat_reset_handler diff --git a/plat/rpi/common/include/rpi_shared.h b/plat/rpi/common/include/rpi_shared.h index 6863438926..ddf239eb51 100644 --- a/plat/rpi/common/include/rpi_shared.h +++ b/plat/rpi/common/include/rpi_shared.h @@ -36,4 +36,6 @@ void plat_rpi3_io_setup(void); /* VideoCore firmware commands */ int rpi3_vc_hardware_get_board_revision(uint32_t *revision); +int plat_rpi_get_model(void); + #endif /* RPI3_PRIVATE_H */ diff --git a/plat/rpi/rpi3/aarch64/plat_helpers.S b/plat/rpi/rpi3/aarch64/plat_helpers.S deleted file mode 100644 index ab925b6c0b..0000000000 --- a/plat/rpi/rpi3/aarch64/plat_helpers.S +++ /dev/null @@ -1,163 +0,0 @@ -/* - * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved. - * - * SPDX-License-Identifier: BSD-3-Clause - */ - -#include <arch.h> -#include <asm_macros.S> -#include <assert_macros.S> -#include <platform_def.h> - - .globl plat_crash_console_flush - .globl plat_crash_console_init - .globl plat_crash_console_putc - .globl platform_mem_init - .globl plat_get_my_entrypoint - .globl plat_is_my_cpu_primary - .globl plat_my_core_pos - .globl plat_rpi3_calc_core_pos - .globl plat_secondary_cold_boot_setup - - /* ----------------------------------------------------- - * unsigned int plat_my_core_pos(void) - * - * This function uses the plat_rpi3_calc_core_pos() - * definition to get the index of the calling CPU. - * ----------------------------------------------------- - */ -func plat_my_core_pos - mrs x0, mpidr_el1 - b plat_rpi3_calc_core_pos -endfunc plat_my_core_pos - - /* ----------------------------------------------------- - * unsigned int plat_rpi3_calc_core_pos(u_register_t mpidr); - * - * CorePos = (ClusterId * 4) + CoreId - * ----------------------------------------------------- - */ -func plat_rpi3_calc_core_pos - and x1, x0, #MPIDR_CPU_MASK - and x0, x0, #MPIDR_CLUSTER_MASK - add x0, x1, x0, LSR #6 - ret -endfunc plat_rpi3_calc_core_pos - - /* ----------------------------------------------------- - * unsigned int plat_is_my_cpu_primary (void); - * - * Find out whether the current cpu is the primary - * cpu. - * ----------------------------------------------------- - */ -func plat_is_my_cpu_primary - mrs x0, mpidr_el1 - and x0, x0, #(MPIDR_CLUSTER_MASK | MPIDR_CPU_MASK) - cmp x0, #RPI3_PRIMARY_CPU - cset w0, eq - ret -endfunc plat_is_my_cpu_primary - - /* ----------------------------------------------------- - * void plat_secondary_cold_boot_setup (void); - * - * This function performs any platform specific actions - * needed for a secondary cpu after a cold reset e.g - * mark the cpu's presence, mechanism to place it in a - * holding pen etc. - * ----------------------------------------------------- - */ -func plat_secondary_cold_boot_setup - /* Calculate address of our hold entry */ - bl plat_my_core_pos - lsl x0, x0, #3 - mov_imm x2, PLAT_RPI3_TM_HOLD_BASE - add x0, x0, x2 - - /* - * This code runs way before requesting the warmboot of this core, - * so it is possible to clear the mailbox before getting a request - * to boot. - */ - mov x1, PLAT_RPI3_TM_HOLD_STATE_WAIT - str x1,[x0] - - /* Wait until we have a go */ -poll_mailbox: - wfe - ldr x1, [x0] - cmp x1, PLAT_RPI3_TM_HOLD_STATE_GO - bne poll_mailbox - - /* Jump to the provided entrypoint */ - mov_imm x0, PLAT_RPI3_TM_ENTRYPOINT - ldr x1, [x0] - br x1 -endfunc plat_secondary_cold_boot_setup - - /* --------------------------------------------------------------------- - * uintptr_t plat_get_my_entrypoint (void); - * - * Main job of this routine is to distinguish between a cold and a warm - * boot. - * - * This functions returns: - * - 0 for a cold boot. - * - Any other value for a warm boot. - * --------------------------------------------------------------------- - */ -func plat_get_my_entrypoint - /* TODO: support warm boot */ - mov x0, #0 - ret -endfunc plat_get_my_entrypoint - - /* --------------------------------------------- - * void platform_mem_init (void); - * - * No need to carry out any memory initialization. - * --------------------------------------------- - */ -func platform_mem_init - ret -endfunc platform_mem_init - - /* --------------------------------------------- - * int plat_crash_console_init(void) - * Function to initialize the crash console - * without a C Runtime to print crash report. - * Clobber list : x0 - x3 - * --------------------------------------------- - */ -func plat_crash_console_init - mov_imm x0, PLAT_RPI_MINI_UART_BASE - mov x1, xzr - mov x2, xzr - b console_16550_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_RPI_MINI_UART_BASE - b console_16550_core_putc -endfunc plat_crash_console_putc - - /* --------------------------------------------- - * int plat_crash_console_flush() - * Function to force a write of all buffered - * data that hasn't been output. - * Out : return -1 on error else return 0. - * Clobber list : x0, x1 - * --------------------------------------------- - */ -func plat_crash_console_flush - mov_imm x0, PLAT_RPI_MINI_UART_BASE - b console_16550_core_flush -endfunc plat_crash_console_flush diff --git a/plat/rpi/rpi3/include/platform_def.h b/plat/rpi/rpi3/include/platform_def.h index 9cacd99150..2bcf53ee9e 100644 --- a/plat/rpi/rpi3/include/platform_def.h +++ b/plat/rpi/rpi3/include/platform_def.h @@ -24,7 +24,7 @@ #define PLATFORM_CLUSTER0_CORE_COUNT PLATFORM_MAX_CPUS_PER_CLUSTER #define PLATFORM_CORE_COUNT PLATFORM_CLUSTER0_CORE_COUNT -#define RPI3_PRIMARY_CPU U(0) +#define RPI_PRIMARY_CPU U(0) #define PLAT_MAX_PWR_LVL MPIDR_AFFLVL1 #define PLAT_NUM_PWR_DOMAINS (PLATFORM_CLUSTER_COUNT + \ diff --git a/plat/rpi/rpi3/platform.mk b/plat/rpi/rpi3/platform.mk index a5b8904d59..bcfc34e20e 100644 --- a/plat/rpi/rpi3/platform.mk +++ b/plat/rpi/rpi3/platform.mk @@ -15,6 +15,7 @@ PLAT_BL_COMMON_SOURCES := drivers/ti/uart/aarch64/16550_console.S \ drivers/gpio/gpio.c \ drivers/delay_timer/delay_timer.c \ drivers/rpi3/gpio/rpi3_gpio.c \ + plat/rpi/common/aarch64/plat_helpers.S \ plat/rpi/common/rpi3_common.c \ ${XLAT_TABLES_LIB_SRCS} @@ -23,7 +24,6 @@ BL1_SOURCES += drivers/io/io_fip.c \ drivers/io/io_storage.c \ lib/cpus/aarch64/cortex_a53.S \ plat/common/aarch64/platform_mp_stack.S \ - plat/rpi/rpi3/aarch64/plat_helpers.S \ plat/rpi/rpi3/rpi3_bl1_setup.c \ plat/rpi/common/rpi3_io_storage.c \ drivers/rpi3/mailbox/rpi3_mbox.c \ @@ -38,7 +38,6 @@ BL2_SOURCES += common/desc_image_load.c \ drivers/mmc/mmc.c \ drivers/rpi3/sdhost/rpi3_sdhost.c \ plat/common/aarch64/platform_mp_stack.S \ - plat/rpi/rpi3/aarch64/plat_helpers.S \ plat/rpi/rpi3/aarch64/rpi3_bl2_mem_params_desc.c \ plat/rpi/rpi3/rpi3_bl2_setup.c \ plat/rpi/common/rpi3_image_load.c \ @@ -46,7 +45,6 @@ BL2_SOURCES += common/desc_image_load.c \ BL31_SOURCES += lib/cpus/aarch64/cortex_a53.S \ plat/common/plat_psci_common.c \ - plat/rpi/rpi3/aarch64/plat_helpers.S \ plat/rpi/rpi3/rpi3_bl31_setup.c \ plat/rpi/common/rpi3_pm.c \ plat/rpi/common/rpi3_topology.c \ diff --git a/plat/rpi/rpi4/include/platform_def.h b/plat/rpi/rpi4/include/platform_def.h index 6f6bbbe7ae..d03eea6e9a 100644 --- a/plat/rpi/rpi4/include/platform_def.h +++ b/plat/rpi/rpi4/include/platform_def.h @@ -24,7 +24,7 @@ #define PLATFORM_CLUSTER0_CORE_COUNT PLATFORM_MAX_CPUS_PER_CLUSTER #define PLATFORM_CORE_COUNT PLATFORM_CLUSTER0_CORE_COUNT -#define RPI4_PRIMARY_CPU U(0) +#define RPI_PRIMARY_CPU U(0) #define PLAT_MAX_PWR_LVL MPIDR_AFFLVL1 #define PLAT_NUM_PWR_DOMAINS (PLATFORM_CLUSTER_COUNT + \ diff --git a/plat/rpi/rpi4/platform.mk b/plat/rpi/rpi4/platform.mk index 49e78dfed0..0744bceb46 100644 --- a/plat/rpi/rpi4/platform.mk +++ b/plat/rpi/rpi4/platform.mk @@ -16,7 +16,7 @@ PLAT_BL_COMMON_SOURCES := drivers/ti/uart/aarch64/16550_console.S \ ${XLAT_TABLES_LIB_SRCS} BL31_SOURCES += lib/cpus/aarch64/cortex_a72.S \ - plat/rpi/rpi4/aarch64/plat_helpers.S \ + plat/rpi/common/aarch64/plat_helpers.S \ plat/rpi/rpi4/aarch64/armstub8_header.S \ drivers/arm/gic/common/gic_common.c \ drivers/arm/gic/v2/gicv2_helpers.c \ |