Push old Amlogic BL2 sourcesHEADmaster

2 files changed, 437 insertions, 0 deletions

diff --git a/plat/fvp/aarch64/fvp_common.c b/plat/fvp/aarch64/fvp_common.c
new file mode 100644
index 0000000..3a07844
--- /dev/null
+++ b/plat/fvp/aarch64/fvp_common.c
@@ -0,0 +1,251 @@
+/*
+ * Copyright (c) 2013-2014, 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 <arch.h>
+#include <arch_helpers.h>
+#include <assert.h>
+#include <bl_common.h>
+#include <cci400.h>
+#include <debug.h>
+#include <mmio.h>
+#include <platform.h>
+#include <xlat_tables.h>
+#include "../fvp_def.h"
+
+/*******************************************************************************
+ * This array holds the characteristics of the differences between the three
+ * FVP platforms (Base, A53_A57 & Foundation). It will be populated during cold
+ * boot at each boot stage by the primary before enabling the MMU (to allow cci
+ * configuration) & used thereafter. Each BL will have its own copy to allow
+ * independent operation.
+ ******************************************************************************/
+static unsigned long fvp_config[CONFIG_LIMIT];
+
+/*
+ * Table of regions to map using the MMU.
+ * This doesn't include TZRAM as the 'mem_layout' argument passed to
+ * configure_mmu_elx() will give the available subset of that,
+ */
+const mmap_region_t fvp_mmap[] = {
+	{ TZROM_BASE,	TZROM_SIZE,	MT_MEMORY | MT_RO | MT_SECURE },
+	{ TZDRAM_BASE,	TZDRAM_SIZE,	MT_MEMORY | MT_RW | MT_SECURE },
+	{ FLASH0_BASE,	FLASH0_SIZE,	MT_MEMORY | MT_RO | MT_SECURE },
+	{ FLASH1_BASE,	FLASH1_SIZE,	MT_MEMORY | MT_RO | MT_SECURE },
+	{ VRAM_BASE,	VRAM_SIZE,	MT_MEMORY | MT_RW | MT_SECURE },
+	{ DEVICE0_BASE,	DEVICE0_SIZE,	MT_DEVICE | MT_RW | MT_SECURE },
+	{ NSRAM_BASE,	NSRAM_SIZE,	MT_MEMORY | MT_RW | MT_NS },
+	{ DEVICE1_BASE,	DEVICE1_SIZE,	MT_DEVICE | MT_RW | MT_SECURE },
+	/* 2nd GB as device for now...*/
+	{ 0x40000000,	0x40000000,	MT_DEVICE | MT_RW | MT_SECURE },
+	{ DRAM1_BASE,	DRAM1_SIZE,	MT_MEMORY | MT_RW | MT_NS },
+	{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
+ ******************************************************************************/
+#define DEFINE_CONFIGURE_MMU_EL(_el)					\
+	void fvp_configure_mmu_el##_el(unsigned long total_base,		\
+				   unsigned long total_size,		\
+				   unsigned long ro_start,		\
+				   unsigned long ro_limit,		\
+				   unsigned long coh_start,		\
+				   unsigned long coh_limit)		\
+	{								\
+		mmap_add_region(total_base,				\
+				total_size,				\
+				MT_MEMORY | MT_RW | MT_SECURE);		\
+		mmap_add_region(ro_start, ro_limit - ro_start,		\
+				MT_MEMORY | MT_RO | MT_SECURE);		\
+		mmap_add_region(coh_start, coh_limit - coh_start,	\
+				MT_DEVICE | MT_RW | MT_SECURE);		\
+		mmap_add(fvp_mmap);					\
+		init_xlat_tables();					\
+									\
+		enable_mmu_el##_el();					\
+	}
+
+/* Define EL1 and EL3 variants of the function initialising the MMU */
+DEFINE_CONFIGURE_MMU_EL(1)
+DEFINE_CONFIGURE_MMU_EL(3)
+
+/* Simple routine which returns a configuration variable value */
+unsigned long fvp_get_cfgvar(unsigned int var_id)
+{
+	assert(var_id < CONFIG_LIMIT);
+	return fvp_config[var_id];
+}
+
+/*******************************************************************************
+ * A single boot loader stack is expected to work on both the Foundation FVP
+ * models and the two flavours of the Base FVP models (AEMv8 & Cortex). The
+ * SYS_ID register provides a mechanism for detecting the differences between
+ * these platforms. This information is stored in a per-BL array to allow the
+ * code to take the correct path.Per BL platform configuration.
+ ******************************************************************************/
+int fvp_config_setup(void)
+{
+	unsigned int rev, hbi, bld, arch, sys_id, midr_pn;
+
+	sys_id = mmio_read_32(VE_SYSREGS_BASE + V2M_SYS_ID);
+	rev = (sys_id >> SYS_ID_REV_SHIFT) & SYS_ID_REV_MASK;
+	hbi = (sys_id >> SYS_ID_HBI_SHIFT) & SYS_ID_HBI_MASK;
+	bld = (sys_id >> SYS_ID_BLD_SHIFT) & SYS_ID_BLD_MASK;
+	arch = (sys_id >> SYS_ID_ARCH_SHIFT) & SYS_ID_ARCH_MASK;
+
+	if ((rev != REV_FVP) || (arch != ARCH_MODEL))
+		panic();
+
+	/*
+	 * The build field in the SYS_ID tells which variant of the GIC
+	 * memory is implemented by the model.
+	 */
+	switch (bld) {
+	case BLD_GIC_VE_MMAP:
+		fvp_config[CONFIG_GICD_ADDR] = VE_GICD_BASE;
+		fvp_config[CONFIG_GICC_ADDR] = VE_GICC_BASE;
+		fvp_config[CONFIG_GICH_ADDR] = VE_GICH_BASE;
+		fvp_config[CONFIG_GICV_ADDR] = VE_GICV_BASE;
+		break;
+	case BLD_GIC_A53A57_MMAP:
+		fvp_config[CONFIG_GICD_ADDR] = BASE_GICD_BASE;
+		fvp_config[CONFIG_GICC_ADDR] = BASE_GICC_BASE;
+		fvp_config[CONFIG_GICH_ADDR] = BASE_GICH_BASE;
+		fvp_config[CONFIG_GICV_ADDR] = BASE_GICV_BASE;
+		break;
+	default:
+		assert(0);
+	}
+
+	/*
+	 * The hbi field in the SYS_ID is 0x020 for the Base FVP & 0x010
+	 * for the Foundation FVP.
+	 */
+	switch (hbi) {
+	case HBI_FOUNDATION:
+		fvp_config[CONFIG_MAX_AFF0] = 4;
+		fvp_config[CONFIG_MAX_AFF1] = 1;
+		fvp_config[CONFIG_CPU_SETUP] = 0;
+		fvp_config[CONFIG_BASE_MMAP] = 0;
+		fvp_config[CONFIG_HAS_CCI] = 0;
+		fvp_config[CONFIG_HAS_TZC] = 0;
+		break;
+	case HBI_FVP_BASE:
+		midr_pn = (read_midr() >> MIDR_PN_SHIFT) & MIDR_PN_MASK;
+		if ((midr_pn == MIDR_PN_A57) || (midr_pn == MIDR_PN_A53))
+			fvp_config[CONFIG_CPU_SETUP] = 1;
+		else
+			fvp_config[CONFIG_CPU_SETUP] = 0;
+
+		fvp_config[CONFIG_MAX_AFF0] = 4;
+		fvp_config[CONFIG_MAX_AFF1] = 2;
+		fvp_config[CONFIG_BASE_MMAP] = 1;
+		fvp_config[CONFIG_HAS_CCI] = 1;
+		fvp_config[CONFIG_HAS_TZC] = 1;
+		break;
+	default:
+		assert(0);
+	}
+
+	return 0;
+}
+
+unsigned long plat_get_ns_image_entrypoint(void)
+{
+	return NS_IMAGE_OFFSET;
+}
+
+uint64_t plat_get_syscnt_freq(void)
+{
+	uint64_t counter_base_frequency;
+
+	/* Read the frequency from Frequency modes table */
+	counter_base_frequency = mmio_read_32(SYS_CNTCTL_BASE + CNTFID_OFF);
+
+	/* The first entry of the frequency modes table must not be 0 */
+	assert(counter_base_frequency != 0);
+
+	return counter_base_frequency;
+}
+
+void fvp_cci_setup(void)
+{
+	unsigned long cci_setup;
+
+	/*
+	 * Enable CCI-400 for this cluster. No need
+	 * for locks as no other cpu is active at the
+	 * moment
+	 */
+	cci_setup = fvp_get_cfgvar(CONFIG_HAS_CCI);
+	if (cci_setup)
+		cci_enable_coherency(read_mpidr());
+}
+
+
+/*******************************************************************************
+ * Set SPSR and secure state for BL32 image
+ ******************************************************************************/
+void fvp_set_bl32_ep_info(entry_point_info_t *bl32_ep_info)
+{
+	SET_SECURITY_STATE(bl32_ep_info->h.attr, SECURE);
+	/*
+	 * The Secure Payload Dispatcher service is responsible for
+	 * setting the SPSR prior to entry into the BL32 image.
+	 */
+	bl32_ep_info->spsr = 0;
+}
+
+/*******************************************************************************
+ * Set SPSR and secure state for BL33 image
+ ******************************************************************************/
+void fvp_set_bl33_ep_info(entry_point_info_t *bl33_ep_info)
+{
+	unsigned long el_status;
+	unsigned int mode;
+
+	/* Figure out what mode we enter the non-secure world in */
+	el_status = read_id_aa64pfr0_el1() >> ID_AA64PFR0_EL2_SHIFT;
+	el_status &= ID_AA64PFR0_ELX_MASK;
+
+	if (el_status)
+		mode = MODE_EL2;
+	else
+		mode = MODE_EL1;
+
+	/*
+	 * TODO: Consider the possibility of specifying the SPSR in
+	 * the FIP ToC and allowing the platform to have a say as
+	 * well.
+	 */
+	bl33_ep_info->spsr = SPSR_64(mode, MODE_SP_ELX, DISABLE_ALL_EXCEPTIONS);
+	SET_SECURITY_STATE(bl33_ep_info->h.attr, NON_SECURE);
+}
diff --git a/plat/fvp/aarch64/fvp_helpers.S b/plat/fvp/aarch64/fvp_helpers.S
new file mode 100644
index 0000000..f856f46
--- /dev/null
+++ b/plat/fvp/aarch64/fvp_helpers.S
@@ -0,0 +1,186 @@
+/*
+ * Copyright (c) 2013-2014, 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 <arch.h>
+#include <asm_macros.S>
+#include <bl_common.h>
+#include <gic_v2.h>
+#include "../drivers/pwrc/fvp_pwrc.h"
+#include "../fvp_def.h"
+
+	.globl	platform_get_entrypoint
+	.globl	plat_secondary_cold_boot_setup
+	.globl	platform_mem_init
+	.globl	plat_report_exception
+
+	.macro	fvp_choose_gicmmap  param1, param2, x_tmp, w_tmp, res
+	ldr	\x_tmp, =VE_SYSREGS_BASE + V2M_SYS_ID
+	ldr	\w_tmp, [\x_tmp]
+	ubfx	\w_tmp, \w_tmp, #SYS_ID_BLD_SHIFT, #SYS_ID_BLD_LENGTH
+	cmp	\w_tmp, #BLD_GIC_VE_MMAP
+	csel	\res, \param1, \param2, eq
+	.endm
+
+	/* -----------------------------------------------------
+	 * 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.
+	 * TODO: Should we read the PSYS register to make sure
+	 * that the request has gone through.
+	 * -----------------------------------------------------
+	 */
+func plat_secondary_cold_boot_setup
+	/* ---------------------------------------------
+	 * Power down this cpu.
+	 * TODO: Do we need to worry about powering the
+	 * cluster down as well here. That will need
+	 * locks which we won't have unless an elf-
+	 * loader zeroes out the zi section.
+	 * ---------------------------------------------
+	 */
+	mrs	x0, mpidr_el1
+	ldr	x1, =PWRC_BASE
+	str	w0, [x1, #PPOFFR_OFF]
+
+	/* ---------------------------------------------
+	 * Deactivate the gic cpu interface as well
+	 * ---------------------------------------------
+	 */
+	ldr	x0, =VE_GICC_BASE
+	ldr	x1, =BASE_GICC_BASE
+	fvp_choose_gicmmap	x0, x1, x2, w2, x1
+	mov	w0, #(IRQ_BYP_DIS_GRP1 | FIQ_BYP_DIS_GRP1)
+	orr	w0, w0, #(IRQ_BYP_DIS_GRP0 | FIQ_BYP_DIS_GRP0)
+	str	w0, [x1, #GICC_CTLR]
+
+	/* ---------------------------------------------
+	 * There is no sane reason to come out of this
+	 * wfi so panic if we do. This cpu will be pow-
+	 * ered on and reset by the cpu_on pm api
+	 * ---------------------------------------------
+	 */
+	dsb	sy
+	wfi
+cb_panic:
+	b	cb_panic
+
+
+	/* -----------------------------------------------------
+	 * 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.
+	 * On a warm boot, each cpu jumps to the address in its
+	 * mailbox.
+	 *
+	 * TODO: Not a good idea to save lr in a temp reg
+	 * TODO: PSYSR is a common register and should be
+	 * 	accessed using locks. Since its not possible
+	 * 	to use locks immediately after a cold reset
+	 * 	we are relying on the fact that after a cold
+	 * 	reset all cpus will read the same WK field
+	 * -----------------------------------------------------
+	 */
+func platform_get_entrypoint
+	mov	x9, x30 // lr
+	mov	x2, x0
+	ldr	x1, =PWRC_BASE
+	str	w2, [x1, #PSYSR_OFF]
+	ldr	w2, [x1, #PSYSR_OFF]
+	ubfx	w2, w2, #PSYSR_WK_SHIFT, #PSYSR_WK_MASK
+	cbnz	w2, warm_reset
+	mov	x0, x2
+	b	exit
+warm_reset:
+	/* ---------------------------------------------
+	 * A per-cpu mailbox is maintained in the tru-
+	 * sted DRAM. Its flushed out of the caches
+	 * after every update using normal memory so
+	 * its safe to read it here with SO attributes
+	 * ---------------------------------------------
+	 */
+	ldr	x10, =TZDRAM_BASE + MBOX_OFF
+	bl	platform_get_core_pos
+	lsl	x0, x0, #CACHE_WRITEBACK_SHIFT
+	ldr	x0, [x10, x0]
+	cbz	x0, _panic
+exit:
+	ret	x9
+_panic:	b	_panic
+
+
+	/* -----------------------------------------------------
+	 * void platform_mem_init (void);
+	 *
+	 * Zero out the mailbox registers in the TZDRAM. The
+	 * mmu is turned off right now and only the primary can
+	 * ever execute this code. Secondaries will read the
+	 * mailboxes using SO accesses. In short, BL31 will
+	 * update the mailboxes after mapping the tzdram as
+	 * normal memory. It will flush its copy after update.
+	 * BL1 will always read the mailboxes with the MMU off
+	 * -----------------------------------------------------
+	 */
+func platform_mem_init
+	ldr	x0, =TZDRAM_BASE + MBOX_OFF
+	mov	w1, #PLATFORM_CORE_COUNT
+loop:
+	str	xzr, [x0], #CACHE_WRITEBACK_GRANULE
+	subs	w1, w1, #1
+	b.gt	loop
+	ret
+
+	/* ---------------------------------------------
+	 * void plat_report_exception(unsigned int type)
+	 * Function to report an unhandled exception
+	 * with platform-specific means.
+	 * On FVP platform, it updates the LEDs
+	 * to indicate where we are
+	 * ---------------------------------------------
+	 */
+func plat_report_exception
+	mrs	x1, CurrentEl
+	lsr	x1, x1, #MODE_EL_SHIFT
+	lsl	x1, x1, #SYS_LED_EL_SHIFT
+	lsl	x0, x0, #SYS_LED_EC_SHIFT
+	mov	x2, #(SECURE << SYS_LED_SS_SHIFT)
+	orr	x0, x0, x2
+	orr	x0, x0, x1
+	mov	x1, #VE_SYSREGS_BASE
+	add	x1, x1, #V2M_SYS_LED
+	str	w0, [x1]
+	ret