Adding upstream version 2.8.0+dfsg.upstream/2.8.0+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 263 insertions, 0 deletions

diff --git a/plat/brcm/board/stingray/aarch64/plat_helpers.S b/plat/brcm/board/stingray/aarch64/plat_helpers.S
new file mode 100644
index 0000000..9a2039d
--- /dev/null
+++ b/plat/brcm/board/stingray/aarch64/plat_helpers.S
@@ -0,0 +1,263 @@
+/*
+ * Copyright (c) 2015-2020, Broadcom
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <arch.h>
+#include <asm_macros.S>
+#include <assert_macros.S>
+#include <cpu_macros.S>
+#include <cortex_a72.h>
+#include <drivers/ti/uart/uart_16550.h>
+
+#include <platform_def.h>
+
+	.globl	plat_reset_handler
+	.globl	platform_get_entrypoint
+	.globl	plat_secondary_cold_boot_setup
+	.globl	platform_mem_init
+	.globl	platform_check_mpidr
+	.globl	plat_crash_console_init
+	.globl	plat_crash_console_putc
+	.globl	plat_crash_console_flush
+	.globl	plat_disable_acp
+	.globl	plat_is_my_cpu_primary
+	.globl	plat_my_core_pos
+	.globl	platform_is_primary_cpu
+	.globl	plat_brcm_calc_core_pos
+	.globl	plat_get_my_entrypoint
+
+
+	/* ------------------------------------------------------------
+	 * void plat_l2_init(void);
+	 *
+	 * BL1 and BL2 run with one core, one cluster
+	 * This is safe to disable cluster coherency
+	 * to make use of the data cache MMU WB attribute
+	 * for the SRAM.
+	 *
+	 * Set L2 Auxiliary Control Register
+	 * --------------------------------------------------------------------
+	 */
+func plat_l2_init
+	mrs x0, CORTEX_A72_L2ACTLR_EL1
+#if (IMAGE_BL1 || IMAGE_BL2) || defined(USE_SINGLE_CLUSTER)
+	orr x0, x0, #CORTEX_A72_L2ACTLR_DISABLE_ACE_SH_OR_CHI
+#else
+	bic x0, x0, #CORTEX_A72_L2ACTLR_DISABLE_ACE_SH_OR_CHI
+#endif
+	msr CORTEX_A72_L2ACTLR_EL1, x0
+
+	/* Set L2 Control Register */
+	mrs x0, CORTEX_A72_L2CTLR_EL1
+	mov x1, #((CORTEX_A72_L2_DATA_RAM_LATENCY_MASK << \
+			CORTEX_A72_L2CTLR_DATA_RAM_LATENCY_SHIFT) | \
+			(CORTEX_A72_L2_TAG_RAM_LATENCY_MASK << \
+			CORTEX_A72_L2CTLR_TAG_RAM_LATENCY_SHIFT) | \
+			(U(0x1) << CORTEX_A72_L2CTLR_TAG_RAM_SETUP_SHIFT) | \
+			(U(0x1) << CORTEX_A72_L2CTLR_DATA_RAM_SETUP_SHIFT))
+	bic x0, x0, x1
+	mov x1, #((CORTEX_A72_L2_DATA_RAM_LATENCY_3_CYCLES << \
+			CORTEX_A72_L2CTLR_DATA_RAM_LATENCY_SHIFT) | \
+			(U(0x1) << CORTEX_A72_L2CTLR_TAG_RAM_SETUP_SHIFT) | \
+			(U(0x1) << CORTEX_A72_L2CTLR_DATA_RAM_SETUP_SHIFT))
+	orr x0, x0, x1
+	msr CORTEX_A72_L2CTLR_EL1, x0
+
+	isb
+	ret
+endfunc plat_l2_init
+
+	/* --------------------------------------------------------------------
+	 * void plat_reset_handler(void);
+	 *
+	 * Before adding code in this function, refer to the guidelines in
+	 * docs/firmware-design.md.
+	 *
+	 * --------------------------------------------------------------------
+	 */
+func plat_reset_handler
+	mov	x9, x30
+	bl	plat_l2_init
+	mov	x30, x9
+	ret
+endfunc plat_reset_handler
+
+	/* -----------------------------------------------------
+	 * void platform_get_entrypoint (unsigned int mpid);
+	 *
+	 * Main job of this routine is to distinguish between
+	 * a cold and warm boot.
+	 * On a cold boot the secondaries first wait for the
+	 * platform to be initialized after which they are
+	 * hotplugged in. The primary proceeds to perform the
+	 * platform initialization.
+	 * -----------------------------------------------------
+	 */
+func platform_get_entrypoint
+	/*TBD-STINGRAY*/
+	mov x0, #0
+	ret
+endfunc platform_get_entrypoint
+
+	/* -----------------------------------------------------
+	 * 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
+	bl	plat_my_core_pos
+	mov_imm	x1, SECONDARY_CPU_SPIN_BASE_ADDR
+	add	x0, x1, x0, LSL #3
+	mov	x1, #0
+	str	x1, [x0]
+
+	/* Wait until the entrypoint gets populated */
+poll_mailbox:
+	ldr	x1, [x0]
+	cbz	x1, 1f
+	br	x1
+1:
+	wfe
+	b	poll_mailbox
+endfunc plat_secondary_cold_boot_setup
+
+
+	/* -----------------------------------------------------
+	 * void platform_mem_init(void);
+	 *
+	 * We don't need to carry out any memory initialization
+	 * on CSS platforms. The Secure RAM is accessible straight away.
+	 * -----------------------------------------------------
+	 */
+func platform_mem_init
+	/*TBD-STINGRAY*/
+	ret
+endfunc platform_mem_init
+
+	/* -----------------------------------------------------
+	 * Placeholder function which should be redefined by
+	 * each platform.
+	 * -----------------------------------------------------
+	 */
+func platform_check_mpidr
+	/*TBD-STINGRAY*/
+	mov	x0, xzr
+	ret
+endfunc platform_check_mpidr
+
+	/* ---------------------------------------------
+	 * 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, BRCM_CRASH_CONSOLE_BASE
+	mov_imm	x1, BRCM_CRASH_CONSOLE_REFCLK
+	mov_imm	x2, BRCM_CRASH_CONSOLE_BAUDRATE
+	b	console_16550_core_init
+	ret
+endfunc plat_crash_console_init
+
+	/* ---------------------------------------------
+	 * int plat_crash_console_putc(void)
+	 * Function to print a character on the crash
+	 * console without a C Runtime.
+	 * Clobber list : x1, x2, x3
+	 * ---------------------------------------------
+	 */
+
+func plat_crash_console_putc
+	mov_imm x1, BRCM_CRASH_CONSOLE_BASE
+	b	console_16550_core_putc
+	ret
+endfunc plat_crash_console_putc
+
+	/* ---------------------------------------------
+	 * void plat_crash_console_flush(void)
+	 * Function to flush crash console
+	 * Clobber list : x0, x1
+	 * ---------------------------------------------
+	 */
+func plat_crash_console_flush
+	mov_imm x0, BRCM_CRASH_CONSOLE_BASE
+	b	console_16550_core_flush
+	ret
+endfunc plat_crash_console_flush
+
+	/* -----------------------------------------------------
+	 * Placeholder function which should be redefined by
+	 * each platform. This function is allowed to use
+	 * registers x0 - x17.
+	 * -----------------------------------------------------
+	 */
+
+func plat_disable_acp
+	/*TBD-STINGRAY*/
+	ret
+endfunc plat_disable_acp
+
+	/* -----------------------------------------------------
+	 * unsigned int plat_is_my_cpu_primary (void);
+	 *
+	 * Find out whether the current cpu is the primary
+	 * cpu (applicable only after a cold boot)
+	 * -----------------------------------------------------
+	 */
+func plat_is_my_cpu_primary
+	mrs	x0, mpidr_el1
+	b	platform_is_primary_cpu
+endfunc plat_is_my_cpu_primary
+
+	/* -----------------------------------------------------
+	 *  unsigned int plat_my_core_pos(void)
+	 *  This function uses the plat_brcm_calc_core_pos()
+	 *  definition to get the index of the calling CPU.
+	 * -----------------------------------------------------
+	 */
+func plat_my_core_pos
+	mrs	x0, mpidr_el1
+	b	plat_brcm_calc_core_pos
+endfunc plat_my_core_pos
+
+	/* -----------------------------------------------------
+	 * unsigned int platform_is_primary_cpu (void);
+	 *
+	 * Find out whether the current cpu is the primary
+	 * cpu (applicable only after a cold boot)
+	 * -----------------------------------------------------
+	 */
+func platform_is_primary_cpu
+	mov	x9, x30
+	bl	plat_my_core_pos
+	cmp	x0, #PRIMARY_CPU
+	cset	x0, eq
+	ret	x9
+endfunc platform_is_primary_cpu
+
+	/* -----------------------------------------------------
+	 *  unsigned int plat_brcm_calc_core_pos(uint64_t mpidr)
+	 *  Helper function to calculate the core position.
+	 *  With this function: CorePos = (ClusterId * 4) +
+	 *  				  CoreId
+	 * -----------------------------------------------------
+	 */
+func plat_brcm_calc_core_pos
+	and	x1, x0, #MPIDR_CPU_MASK
+	and	x0, x0, #MPIDR_CLUSTER_MASK
+	add	x0, x1, x0, LSR #7
+	ret
+endfunc plat_brcm_calc_core_pos
+
+func plat_get_my_entrypoint
+	mrs	x0, mpidr_el1
+	b	platform_get_entrypoint
+endfunc plat_get_my_entrypoint