diff options
Diffstat (limited to 'plat/marvell/common/aarch64/marvell_helpers.S')
| -rw-r--r-- | plat/marvell/common/aarch64/marvell_helpers.S | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/plat/marvell/common/aarch64/marvell_helpers.S b/plat/marvell/common/aarch64/marvell_helpers.S new file mode 100644 index 00000000..bf179bea --- /dev/null +++ b/plat/marvell/common/aarch64/marvell_helpers.S @@ -0,0 +1,131 @@ +/* + * *************************************************************************** + * Copyright (C) 2016 Marvell International Ltd. + * *************************************************************************** + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of Marvell nor the names of its contributors may be used + * to endorse or promote products derived from this software without specific + * prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, + * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + *************************************************************************** + */ +/* + * Copyright (c) 2015, ARM Limited and Contributors. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * Neither the name of ARM nor the names of its contributors may be used + * to endorse or promote products derived from this software without specific + * prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ +#include <asm_macros.S> +#include <platform_def.h> + + .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 + + + /* ----------------------------------------------------- + * 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 |