meson/gxl: Initial port of Amlogic Meson S905x (GXL)

The Amlogic Meson S905x is a SoC with a quad core Arm Cortex-A53 running
at 1.5Ghz. It also contains a Cortex-M3 used as SCP.

This port is a minimal implementation of BL31 capable of booting
mainline U-Boot and Linux:

- Partial SCPI support.
- Basic PSCI support (CPU_ON, SYSTEM_RESET, SYSTEM_OFF).
- GICv2 driver set up.
- Basic SIP services (read efuse data, enable/disable JTAG).

This port has been tested on a lepotato.

Signed-off-by: Antonio Nino Diaz <antonio.ninodiaz@arm.com>
Signed-off-by: Remi Pommarel <repk@triplefau.lt>
This commit is contained in:
Antonio Nino Diaz 2018-12-05 00:09:30 +00:00 committed by Remi Pommarel
parent 0a4bf763f3
commit 95d0d13ce2
15 changed files with 1310 additions and 0 deletions

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/*
* Copyright (c) 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_is_my_cpu_primary
.globl plat_my_core_pos
.globl plat_reset_handler
.globl plat_gxbb_calc_core_pos
/* -----------------------------------------------------
* unsigned int plat_my_core_pos(void);
* -----------------------------------------------------
*/
func plat_my_core_pos
mrs x0, mpidr_el1
b plat_gxbb_calc_core_pos
endfunc plat_my_core_pos
/* -----------------------------------------------------
* unsigned int plat_gxbb_calc_core_pos(u_register_t mpidr);
* -----------------------------------------------------
*/
func plat_gxbb_calc_core_pos
and x0, x0, #MPIDR_CPU_MASK
ret
endfunc plat_gxbb_calc_core_pos
/* -----------------------------------------------------
* unsigned int plat_is_my_cpu_primary(void);
* -----------------------------------------------------
*/
func plat_is_my_cpu_primary
mrs x0, mpidr_el1
and x0, x0, #(MPIDR_CLUSTER_MASK | MPIDR_CPU_MASK)
cmp x0, #GXBB_PRIMARY_CPU
cset w0, eq
ret
endfunc plat_is_my_cpu_primary
/* ---------------------------------------------
* void platform_mem_init(void);
* ---------------------------------------------
*/
func platform_mem_init
ret
endfunc platform_mem_init
/* ---------------------------------------------
* int plat_crash_console_init(void)
* ---------------------------------------------
*/
func plat_crash_console_init
mov_imm x0, GXBB_UART0_AO_BASE
mov_imm x1, GXBB_UART0_AO_CLK_IN_HZ
mov_imm x2, GXBB_UART_BAUDRATE
b console_meson_init
endfunc plat_crash_console_init
/* ---------------------------------------------
* int plat_crash_console_putc(int c)
* Clobber list : x1, x2
* ---------------------------------------------
*/
func plat_crash_console_putc
mov_imm x1, GXBB_UART0_AO_BASE
b console_meson_core_putc
endfunc plat_crash_console_putc
/* ---------------------------------------------
* int plat_crash_console_flush()
* Out : return -1 on error else return 0.
* Clobber list : x0, x1
* ---------------------------------------------
*/
func plat_crash_console_flush
mov_imm x0, GXBB_UART0_AO_BASE
b console_meson_core_flush
endfunc plat_crash_console_flush
/* ---------------------------------------------
* void plat_reset_handler(void);
* ---------------------------------------------
*/
func plat_reset_handler
ret
endfunc plat_reset_handler

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/*
* Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <assert.h>
#include <common/bl_common.h>
#include <drivers/arm/gicv2.h>
#include <common/interrupt_props.h>
#include <plat/common/platform.h>
#include <platform_def.h>
#include <lib/xlat_tables/xlat_mmu_helpers.h>
#include "gxl_private.h"
/*
* Placeholder variables for copying the arguments that have been passed to
* BL31 from BL2.
*/
static entry_point_info_t bl33_image_ep_info;
/*******************************************************************************
* Return a pointer to the 'entry_point_info' structure of the next image for
* the security state specified. BL33 corresponds to the non-secure image type
* while BL32 corresponds to the secure image type. A NULL pointer is returned
* if the image does not exist.
******************************************************************************/
entry_point_info_t *bl31_plat_get_next_image_ep_info(uint32_t type)
{
entry_point_info_t *next_image_info;
assert(type == NON_SECURE);
next_image_info = &bl33_image_ep_info;
/* None of the images can have 0x0 as the entrypoint. */
if (next_image_info->pc != 0U) {
return next_image_info;
} else {
return NULL;
}
}
/*******************************************************************************
* Perform any BL31 early platform setup. Here is an opportunity to copy
* parameters passed by the calling EL (S-EL1 in BL2 & S-EL3 in BL1) before
* they are lost (potentially). This needs to be done before the MMU is
* initialized so that the memory layout can be used while creating page
* tables. BL2 has flushed this information to memory, so we are guaranteed
* to pick up good data.
******************************************************************************/
struct gxbb_bl31_param {
param_header_t h;
image_info_t *bl31_image_info;
entry_point_info_t *bl32_ep_info;
image_info_t *bl32_image_info;
entry_point_info_t *bl33_ep_info;
image_info_t *bl33_image_info;
};
void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1,
u_register_t arg2, u_register_t arg3)
{
struct gxbb_bl31_param *from_bl2;
/* Initialize the console to provide early debug support */
gxbb_console_init();
/*
* In debug builds, we pass a special value in 'arg1' to verify platform
* parameters from BL2 to BL31. In release builds it's not used.
*/
assert(arg1 == GXBB_BL31_PLAT_PARAM_VAL);
/* Check that params passed from BL2 are not NULL. */
from_bl2 = (struct gxbb_bl31_param *) arg0;
/* Check params passed from BL2 are not NULL. */
assert(from_bl2 != NULL);
assert(from_bl2->h.type == PARAM_BL31);
assert(from_bl2->h.version >= VERSION_1);
/*
* Copy BL33 entry point information. It is stored in Secure RAM, in
* BL2's address space.
*/
bl33_image_ep_info = *from_bl2->bl33_ep_info;
if (bl33_image_ep_info.pc == 0U) {
ERROR("BL31: BL33 entrypoint not obtained from BL2\n");
panic();
}
}
void bl31_plat_arch_setup(void)
{
gxbb_setup_page_tables();
enable_mmu_el3(0);
}
/*******************************************************************************
* GICv2 driver setup information
******************************************************************************/
static const interrupt_prop_t gxbb_interrupt_props[] = {
INTR_PROP_DESC(IRQ_SEC_PHY_TIMER, GIC_HIGHEST_SEC_PRIORITY,
GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
INTR_PROP_DESC(IRQ_SEC_SGI_0, GIC_HIGHEST_SEC_PRIORITY,
GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
INTR_PROP_DESC(IRQ_SEC_SGI_1, GIC_HIGHEST_SEC_PRIORITY,
GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
INTR_PROP_DESC(IRQ_SEC_SGI_2, GIC_HIGHEST_SEC_PRIORITY,
GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
INTR_PROP_DESC(IRQ_SEC_SGI_3, GIC_HIGHEST_SEC_PRIORITY,
GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
INTR_PROP_DESC(IRQ_SEC_SGI_4, GIC_HIGHEST_SEC_PRIORITY,
GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
INTR_PROP_DESC(IRQ_SEC_SGI_5, GIC_HIGHEST_SEC_PRIORITY,
GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
INTR_PROP_DESC(IRQ_SEC_SGI_6, GIC_HIGHEST_SEC_PRIORITY,
GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
INTR_PROP_DESC(IRQ_SEC_SGI_7, GIC_HIGHEST_SEC_PRIORITY,
GICV2_INTR_GROUP0, GIC_INTR_CFG_LEVEL),
};
static const gicv2_driver_data_t gxbb_gic_data = {
.gicd_base = GXBB_GICD_BASE,
.gicc_base = GXBB_GICC_BASE,
.interrupt_props = gxbb_interrupt_props,
.interrupt_props_num = ARRAY_SIZE(gxbb_interrupt_props),
};
void bl31_platform_setup(void)
{
mhu_secure_init();
gicv2_driver_init(&gxbb_gic_data);
gicv2_distif_init();
gicv2_pcpu_distif_init();
gicv2_cpuif_enable();
// gxbb_thermal_unknown();
}

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/*
* Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <assert.h>
#include <common/bl_common.h>
#include <common/debug.h>
#include <common/ep_info.h>
#include <bl31/interrupt_mgmt.h>
#include <meson_console.h>
#include <lib/mmio.h>
#include <platform_def.h>
#include <stdint.h>
#include <lib/xlat_tables/xlat_tables_v2.h>
/*******************************************************************************
* Platform memory map regions
******************************************************************************/
#define MAP_NSDRAM0 MAP_REGION_FLAT(GXBB_NSDRAM0_BASE, \
GXBB_NSDRAM0_SIZE, \
MT_MEMORY | MT_RW | MT_NS)
#define MAP_NSDRAM1 MAP_REGION_FLAT(GXBB_NSDRAM1_BASE, \
GXBB_NSDRAM1_SIZE, \
MT_MEMORY | MT_RW | MT_NS)
#define MAP_SEC_DEVICE0 MAP_REGION_FLAT(GXBB_SEC_DEVICE0_BASE, \
GXBB_SEC_DEVICE0_SIZE, \
MT_DEVICE | MT_RW | MT_SECURE)
#define MAP_SEC_DEVICE1 MAP_REGION_FLAT(GXBB_SEC_DEVICE1_BASE, \
GXBB_SEC_DEVICE1_SIZE, \
MT_DEVICE | MT_RW | MT_SECURE)
#define MAP_TZRAM MAP_REGION_FLAT(GXBB_TZRAM_BASE, \
GXBB_TZRAM_SIZE, \
MT_DEVICE | MT_RW | MT_SECURE)
#define MAP_SEC_DEVICE2 MAP_REGION_FLAT(GXBB_SEC_DEVICE2_BASE, \
GXBB_SEC_DEVICE2_SIZE, \
MT_DEVICE | MT_RW | MT_SECURE)
#define MAP_SEC_DEVICE3 MAP_REGION_FLAT(GXBB_SEC_DEVICE3_BASE, \
GXBB_SEC_DEVICE3_SIZE, \
MT_DEVICE | MT_RW | MT_SECURE)
static const mmap_region_t gxbb_mmap[] = {
MAP_NSDRAM0,
MAP_NSDRAM1,
MAP_SEC_DEVICE0,
MAP_SEC_DEVICE1,
MAP_TZRAM,
MAP_SEC_DEVICE2,
MAP_SEC_DEVICE3,
{0}
};
/*******************************************************************************
* Per-image regions
******************************************************************************/
#define MAP_BL31 MAP_REGION_FLAT(BL31_BASE, \
BL31_END - BL31_BASE, \
MT_MEMORY | MT_RW | MT_SECURE)
#define MAP_BL_CODE MAP_REGION_FLAT(BL_CODE_BASE, \
BL_CODE_END - BL_CODE_BASE, \
MT_CODE | MT_SECURE)
#define MAP_BL_RO_DATA MAP_REGION_FLAT(BL_RO_DATA_BASE, \
BL_RO_DATA_END - BL_RO_DATA_BASE, \
MT_RO_DATA | MT_SECURE)
#define MAP_BL_COHERENT MAP_REGION_FLAT(BL_COHERENT_RAM_BASE, \
BL_COHERENT_RAM_END - BL_COHERENT_RAM_BASE, \
MT_DEVICE | MT_RW | MT_SECURE)
/*******************************************************************************
* Function that sets up the translation tables.
******************************************************************************/
void gxbb_setup_page_tables(void)
{
#if IMAGE_BL31
const mmap_region_t gxbb_bl_mmap[] = {
MAP_BL31,
MAP_BL_CODE,
MAP_BL_RO_DATA,
#if USE_COHERENT_MEM
MAP_BL_COHERENT,
#endif
{0}
};
#endif
mmap_add(gxbb_bl_mmap);
mmap_add(gxbb_mmap);
init_xlat_tables();
}
/*******************************************************************************
* Function that sets up the console
******************************************************************************/
static console_meson_t gxbb_console;
void gxbb_console_init(void)
{
int rc = console_meson_register(GXBB_UART0_AO_BASE,
GXBB_UART0_AO_CLK_IN_HZ,
GXBB_UART_BAUDRATE,
&gxbb_console);
if (rc == 0) {
/*
* The crash console doesn't use the multi console API, it uses
* the core console functions directly. It is safe to call panic
* and let it print debug information.
*/
panic();
}
console_set_scope(&gxbb_console.console,
CONSOLE_FLAG_BOOT | CONSOLE_FLAG_RUNTIME);
}
/*******************************************************************************
* Function that returns the system counter frequency
******************************************************************************/
unsigned int plat_get_syscnt_freq2(void)
{
uint32_t val;
val = mmio_read_32(GXBB_SYS_CPU_CFG7);
val &= 0xFDFFFFFF;
mmio_write_32(GXBB_SYS_CPU_CFG7, val);
val = mmio_read_32(GXBB_AO_TIMESTAMP_CNTL);
val &= 0xFFFFFE00;
mmio_write_32(GXBB_AO_TIMESTAMP_CNTL, val);
return GXBB_OSC24M_CLK_IN_HZ;
}

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/*
* Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef GXBB_DEF_H
#define GXBB_DEF_H
#include <lib/utils_def.h>
/*******************************************************************************
* System oscillator
******************************************************************************/
#define GXBB_OSC24M_CLK_IN_HZ ULL(24000000) /* 24 MHz */
/*******************************************************************************
* Memory regions
******************************************************************************/
#define GXBB_NSDRAM0_BASE UL(0x01000000)
#define GXBB_NSDRAM0_SIZE UL(0x0F000000)
#define GXBB_NSDRAM1_BASE UL(0x10000000)
#define GXBB_NSDRAM1_SIZE UL(0x00100000)
#define BL31_BASE UL(0x05100000)
#define BL31_SIZE UL(0x000C0000)
#define BL31_LIMIT (BL31_BASE + BL31_SIZE)
/* Shared memory used for SMC services */
#define GXBB_SHARE_MEM_INPUT_BASE UL(0x050FE000)
#define GXBB_SHARE_MEM_OUTPUT_BASE UL(0x050FF000)
#define GXBB_SEC_DEVICE0_BASE UL(0xC0000000)
#define GXBB_SEC_DEVICE0_SIZE UL(0x09000000)
#define GXBB_SEC_DEVICE1_BASE UL(0xD0040000)
#define GXBB_SEC_DEVICE1_SIZE UL(0x00008000)
#define GXBB_TZRAM_BASE UL(0xD9000000)
#define GXBB_TZRAM_SIZE UL(0x00014000)
/* Top 0xC000 bytes (up to 0xD9020000) used by BL2 */
/* Mailboxes */
#define GXBB_MHU_SECURE_SCP_TO_AP_PAYLOAD UL(0xD9013800)
#define GXBB_MHU_SECURE_AP_TO_SCP_PAYLOAD UL(0xD9013A00)
#define GXBB_PSCI_MAILBOX_BASE UL(0xD9013F00)
// * [ 1K] 0xD901_3800 - 0xD901_3BFF Secure Mailbox (3)
// * [ 1K] 0xD901_3400 - 0xD901_37FF High Mailbox (2) *
// * [ 1K] 0xD901_3000 - 0xD901_33FF High Mailbox (1) *
#define GXBB_TZROM_BASE UL(0xD9040000)
#define GXBB_TZROM_SIZE UL(0x00010000)
#define GXBB_SEC_DEVICE2_BASE UL(0xDA000000)
#define GXBB_SEC_DEVICE2_SIZE UL(0x00200000)
#define GXBB_SEC_DEVICE3_BASE UL(0xDA800000)
#define GXBB_SEC_DEVICE3_SIZE UL(0x00200000)
/*******************************************************************************
* GIC-400 and interrupt handling related constants
******************************************************************************/
#define GXBB_GICD_BASE UL(0xC4301000)
#define GXBB_GICC_BASE UL(0xC4302000)
#define IRQ_SEC_PHY_TIMER 29
#define IRQ_SEC_SGI_0 8
#define IRQ_SEC_SGI_1 9
#define IRQ_SEC_SGI_2 10
#define IRQ_SEC_SGI_3 11
#define IRQ_SEC_SGI_4 12
#define IRQ_SEC_SGI_5 13
#define IRQ_SEC_SGI_6 14
#define IRQ_SEC_SGI_7 15
/*******************************************************************************
* UART definitions
******************************************************************************/
#define GXBB_UART0_AO_BASE UL(0xC81004C0)
#define GXBB_UART0_AO_CLK_IN_HZ GXBB_OSC24M_CLK_IN_HZ
#define GXBB_UART_BAUDRATE U(115200)
/*******************************************************************************
* Memory-mapped I/O Registers
******************************************************************************/
#define GXBB_AO_TIMESTAMP_CNTL UL(0xC81000B4)
#define GXBB_SYS_CPU_CFG7 UL(0xC8834664)
#define GXBB_AO_RTI_STATUS_REG3 UL(0xDA10001C)
#define GXBB_HIU_MAILBOX_SET_0 UL(0xDA83C404)
#define GXBB_HIU_MAILBOX_STAT_0 UL(0xDA83C408)
#define GXBB_HIU_MAILBOX_CLR_0 UL(0xDA83C40C)
#define GXBB_HIU_MAILBOX_SET_3 UL(0xDA83C428)
#define GXBB_HIU_MAILBOX_STAT_3 UL(0xDA83C42C)
#define GXBB_HIU_MAILBOX_CLR_3 UL(0xDA83C430)
/*******************************************************************************
* System Monitor Call IDs and arguments
******************************************************************************/
#define GXBB_SM_GET_SHARE_MEM_INPUT_BASE U(0x82000020)
#define GXBB_SM_GET_SHARE_MEM_OUTPUT_BASE U(0x82000021)
#define GXBB_SM_EFUSE_READ U(0x82000030)
#define GXBB_SM_EFUSE_USER_MAX U(0x82000033)
#define GXBB_SM_JTAG_ON U(0x82000040)
#define GXBB_SM_JTAG_OFF U(0x82000041)
#define GXBB_JTAG_STATE_ON U(0)
#define GXBB_JTAG_STATE_OFF U(1)
#define GXBB_JTAG_M3_AO U(0)
#define GXBB_JTAG_M3_EE U(1)
#define GXBB_JTAG_A53_AO U(2)
#define GXBB_JTAG_A53_EE U(3)
#endif /* GXBB_DEF_H */

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/*
* Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <stdint.h>
#include "gxl_private.h"
#define EFUSE_BASE 0x140
#define EFUSE_SIZE 0xC0
uint64_t gxbb_efuse_read(void *dst, uint32_t offset, uint32_t size)
{
if ((uint64_t)(offset + size) > (uint64_t)EFUSE_SIZE)
return 0;
return scpi_efuse_read(dst, offset + EFUSE_BASE, size);
}
uint64_t gxbb_efuse_user_max(void)
{
return EFUSE_SIZE;
}

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/*
* Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <lib/bakery_lock.h>
#include <lib/mmio.h>
#include <platform_def.h>
static DEFINE_BAKERY_LOCK(mhu_lock);
void mhu_secure_message_start(void)
{
bakery_lock_get(&mhu_lock);
while (mmio_read_32(GXBB_HIU_MAILBOX_STAT_3) != 0)
;
}
void mhu_secure_message_send(uint32_t msg)
{
mmio_write_32(GXBB_HIU_MAILBOX_SET_3, msg);
while (mmio_read_32(GXBB_HIU_MAILBOX_STAT_3) != 0)
;
}
uint32_t mhu_secure_message_wait(void)
{
uint32_t val;
do {
val = mmio_read_32(GXBB_HIU_MAILBOX_STAT_0);
} while (val == 0);
return val;
}
void mhu_secure_message_end(void)
{
mmio_write_32(GXBB_HIU_MAILBOX_CLR_0, 0xFFFFFFFF);
bakery_lock_release(&mhu_lock);
}
void mhu_secure_init(void)
{
bakery_lock_init(&mhu_lock);
mmio_write_32(GXBB_HIU_MAILBOX_CLR_3, 0xFFFFFFFF);
}

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/*
* Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <arch_helpers.h>
#include <assert.h>
#include <drivers/console.h>
#include <common/debug.h>
#include <errno.h>
#include <drivers/arm/gicv2.h>
#include <lib/mmio.h>
#include <plat/common/platform.h>
#include <platform_def.h>
#include <lib/psci/psci.h>
#include "gxl_private.h"
#define SCPI_POWER_ON 0
#define SCPI_POWER_RETENTION 1
#define SCPI_POWER_OFF 3
#define SCPI_SYSTEM_SHUTDOWN 0
#define SCPI_SYSTEM_REBOOT 1
static uintptr_t gxbb_sec_entrypoint;
static volatile uint32_t gxbb_cpu0_go;
static void gxbb_program_mailbox(u_register_t mpidr, uint64_t value)
{
unsigned int core = plat_gxbb_calc_core_pos(mpidr);
uintptr_t cpu_mailbox_addr = GXBB_PSCI_MAILBOX_BASE + (core << 4);
mmio_write_64(cpu_mailbox_addr, value);
flush_dcache_range(cpu_mailbox_addr, sizeof(uint64_t));
}
static void __dead2 gxbb_system_reset(void)
{
INFO("BL31: PSCI_SYSTEM_RESET\n");
uint32_t status = mmio_read_32(GXBB_AO_RTI_STATUS_REG3);
NOTICE("BL31: Reboot reason: 0x%x\n", status);
status &= 0xFFFF0FF0;
console_flush();
mmio_write_32(GXBB_AO_RTI_STATUS_REG3, status);
int ret = scpi_sys_power_state(SCPI_SYSTEM_REBOOT);
if (ret != 0) {
ERROR("BL31: PSCI_SYSTEM_RESET: SCP error: %u\n", ret);
panic();
}
wfi();
ERROR("BL31: PSCI_SYSTEM_RESET: Operation not handled\n");
panic();
}
static void __dead2 gxbb_system_off(void)
{
INFO("BL31: PSCI_SYSTEM_OFF\n");
unsigned int ret = scpi_sys_power_state(SCPI_SYSTEM_SHUTDOWN);
if (ret != 0) {
ERROR("BL31: PSCI_SYSTEM_OFF: SCP error %u\n", ret);
panic();
}
gxbb_program_mailbox(read_mpidr_el1(), 0);
wfi();
ERROR("BL31: PSCI_SYSTEM_OFF: Operation not handled\n");
panic();
}
static int32_t gxbb_pwr_domain_on(u_register_t mpidr)
{
unsigned int core = plat_gxbb_calc_core_pos(mpidr);
/* CPU0 can't be turned OFF, emulate it with a WFE loop */
if (core == GXBB_PRIMARY_CPU) {
VERBOSE("BL31: Releasing CPU0 from wait loop...\n");
gxbb_cpu0_go = 1;
flush_dcache_range((uintptr_t)&gxbb_cpu0_go,
sizeof(gxbb_cpu0_go));
dsb();
isb();
sev();
return PSCI_E_SUCCESS;
}
gxbb_program_mailbox(mpidr, gxbb_sec_entrypoint);
scpi_set_css_power_state(mpidr,
SCPI_POWER_ON, SCPI_POWER_ON, SCPI_POWER_ON);
dmbsy();
sev();
return PSCI_E_SUCCESS;
}
static void gxbb_pwr_domain_on_finish(const psci_power_state_t *target_state)
{
unsigned int core = plat_gxbb_calc_core_pos(read_mpidr_el1());
assert(target_state->pwr_domain_state[MPIDR_AFFLVL0] ==
PLAT_LOCAL_STATE_OFF);
if (core == GXBB_PRIMARY_CPU) {
gxbb_cpu0_go = 0;
flush_dcache_range((uintptr_t)&gxbb_cpu0_go,
sizeof(gxbb_cpu0_go));
dsb();
isb();
}
gicv2_pcpu_distif_init();
gicv2_cpuif_enable();
}
static void gxbb_pwr_domain_off(const psci_power_state_t *target_state)
{
u_register_t mpidr = read_mpidr_el1();
unsigned int core = plat_gxbb_calc_core_pos(mpidr);
uintptr_t addr = GXBB_PSCI_MAILBOX_BASE + 8 + (core << 4);
mmio_write_32(addr, 0xFFFFFFFF);
flush_dcache_range(addr, sizeof(uint32_t));
gicv2_cpuif_disable();
/* CPU0 can't be turned OFF, emulate it with a WFE loop */
if (core == GXBB_PRIMARY_CPU)
return;
scpi_set_css_power_state(mpidr,
SCPI_POWER_OFF, SCPI_POWER_ON, SCPI_POWER_ON);
}
static void __dead2 gxbb_pwr_domain_pwr_down_wfi(const psci_power_state_t
*target_state)
{
unsigned int core = plat_gxbb_calc_core_pos(read_mpidr_el1());
/* CPU0 can't be turned OFF, emulate it with a WFE loop */
if (core == GXBB_PRIMARY_CPU) {
VERBOSE("BL31: CPU0 entering wait loop...\n");
while (gxbb_cpu0_go == 0)
wfe();
VERBOSE("BL31: CPU0 resumed.\n");
write_rmr_el3(RMR_EL3_RR_BIT | RMR_EL3_AA64_BIT);
}
dsbsy();
for (;;)
wfi();
}
/*******************************************************************************
* Platform handlers and setup function.
******************************************************************************/
static const plat_psci_ops_t gxbb_ops = {
.pwr_domain_on = gxbb_pwr_domain_on,
.pwr_domain_on_finish = gxbb_pwr_domain_on_finish,
.pwr_domain_off = gxbb_pwr_domain_off,
.pwr_domain_pwr_down_wfi = gxbb_pwr_domain_pwr_down_wfi,
.system_off = gxbb_system_off,
.system_reset = gxbb_system_reset,
};
int plat_setup_psci_ops(uintptr_t sec_entrypoint,
const plat_psci_ops_t **psci_ops)
{
gxbb_sec_entrypoint = sec_entrypoint;
*psci_ops = &gxbb_ops;
gxbb_cpu0_go = 0;
return 0;
}

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/*
* Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef GXBB_PRIVATE_H
#define GXBB_PRIVATE_H
#include <stdint.h>
/* Utility functions */
unsigned int plat_gxbb_calc_core_pos(u_register_t mpidr);
void gxbb_console_init(void);
void gxbb_setup_page_tables(void);
/* MHU functions */
void mhu_secure_message_start(void);
void mhu_secure_message_send(uint32_t msg);
uint32_t mhu_secure_message_wait(void);
void mhu_secure_message_end(void);
void mhu_secure_init(void);
/* SCPI functions */
void scpi_set_css_power_state(u_register_t mpidr, uint32_t cpu_state,
uint32_t cluster_state, uint32_t css_state);
uint32_t scpi_sys_power_state(uint64_t system_state);
void scpi_jtag_set_state(uint32_t state, uint8_t select);
uint32_t scpi_efuse_read(void *dst, uint32_t base, uint32_t size);
void scpi_unknown_thermal(uint32_t arg0, uint32_t arg1,
uint32_t arg2, uint32_t arg3);
/* Peripherals */
void gxbb_thermal_unknown(void);
uint64_t gxbb_efuse_read(void *dst, uint32_t offset, uint32_t size);
uint64_t gxbb_efuse_user_max(void);
#endif /* GXBB_PRIVATE_H */

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/*
* Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <assert.h>
#include <lib/mmio.h>
#include <plat/common/platform.h>
#include <platform_def.h>
#include <string.h>
#include "gxl_private.h"
#define SIZE_SHIFT 20
#define SIZE_MASK 0x1FF
/*
* Note: The Amlogic SCP firmware uses the legacy SCPI protocol.
*/
#define SCPI_CMD_SET_CSS_POWER_STATE 0x04
#define SCPI_CMD_SET_SYS_POWER_STATE 0x08
#define SCPI_CMD_JTAG_SET_STATE 0xC0
#define SCPI_CMD_EFUSE_READ 0xC2
static inline uint32_t scpi_cmd(uint32_t command, uint32_t size)
{
return command | (size << SIZE_SHIFT);
}
void scpi_secure_message_send(uint32_t command, uint32_t size)
{
mhu_secure_message_send(scpi_cmd(command, size));
}
uint32_t scpi_secure_message_receive(void **message_out, size_t *size_out)
{
uint32_t response = mhu_secure_message_wait();
size_t size = (response >> SIZE_SHIFT) & SIZE_MASK;
response &= ~(SIZE_MASK << SIZE_SHIFT);
if (size_out != NULL)
*size_out = size;
if (message_out != NULL)
*message_out = (void *)GXBB_MHU_SECURE_SCP_TO_AP_PAYLOAD;
return response;
}
void scpi_set_css_power_state(u_register_t mpidr, uint32_t cpu_state,
uint32_t cluster_state, uint32_t css_state)
{
uint32_t state = (mpidr & 0x0F) | /* CPU ID */
((mpidr & 0xF00) >> 4) | /* Cluster ID */
(cpu_state << 8) |
(cluster_state << 12) |
(css_state << 16);
mhu_secure_message_start();
mmio_write_32(GXBB_MHU_SECURE_AP_TO_SCP_PAYLOAD, state);
mhu_secure_message_send(scpi_cmd(SCPI_CMD_SET_CSS_POWER_STATE, 4));
mhu_secure_message_wait();
mhu_secure_message_end();
}
uint32_t scpi_sys_power_state(uint64_t system_state)
{
uint32_t *response;
size_t size;
mhu_secure_message_start();
mmio_write_8(GXBB_MHU_SECURE_AP_TO_SCP_PAYLOAD, system_state);
mhu_secure_message_send(scpi_cmd(SCPI_CMD_SET_SYS_POWER_STATE, 1));
scpi_secure_message_receive((void *)&response, &size);
mhu_secure_message_end();
return *response;
}
void scpi_jtag_set_state(uint32_t state, uint8_t select)
{
assert(state <= GXBB_JTAG_STATE_OFF);
if (select > GXBB_JTAG_A53_EE) {
WARN("BL31: Invalid JTAG select (0x%x).\n", select);
return;
}
mhu_secure_message_start();
mmio_write_32(GXBB_MHU_SECURE_AP_TO_SCP_PAYLOAD,
(state << 8) | (uint32_t)select);
mhu_secure_message_send(scpi_cmd(SCPI_CMD_JTAG_SET_STATE, 4));
mhu_secure_message_wait();
mhu_secure_message_end();
}
uint32_t scpi_efuse_read(void *dst, uint32_t base, uint32_t size)
{
uint32_t *response;
size_t resp_size;
if (size > 0x1FC)
return 0;
mhu_secure_message_start();
mmio_write_32(GXBB_MHU_SECURE_AP_TO_SCP_PAYLOAD, base);
mmio_write_32(GXBB_MHU_SECURE_AP_TO_SCP_PAYLOAD + 4, size);
mhu_secure_message_send(scpi_cmd(SCPI_CMD_EFUSE_READ, 8));
scpi_secure_message_receive((void *)&response, &resp_size);
mhu_secure_message_end();
/*
* response[0] is the size of the response message.
* response[1 ... N] are the contents.
*/
if (*response != 0)
memcpy(dst, response + 1, *response);
return *response;
}
void scpi_unknown_thermal(uint32_t arg0, uint32_t arg1,
uint32_t arg2, uint32_t arg3)
{
mhu_secure_message_start();
mmio_write_32(GXBB_MHU_SECURE_AP_TO_SCP_PAYLOAD + 0x0, arg0);
mmio_write_32(GXBB_MHU_SECURE_AP_TO_SCP_PAYLOAD + 0x4, arg1);
mmio_write_32(GXBB_MHU_SECURE_AP_TO_SCP_PAYLOAD + 0x8, arg2);
mmio_write_32(GXBB_MHU_SECURE_AP_TO_SCP_PAYLOAD + 0xC, arg3);
mhu_secure_message_send(scpi_cmd(0xC3, 16));
mhu_secure_message_wait();
mhu_secure_message_end();
}

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/*
* Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <common/debug.h>
#include <lib/mmio.h>
#include <platform_def.h>
#include <common/runtime_svc.h>
#include <stdint.h>
#include "gxl_private.h"
/*******************************************************************************
* This function is responsible for handling all SiP calls
******************************************************************************/
static uintptr_t gxbb_sip_handler(uint32_t smc_fid,
u_register_t x1, u_register_t x2,
u_register_t x3, u_register_t x4,
void *cookie, void *handle,
u_register_t flags)
{
switch (smc_fid) {
case GXBB_SM_GET_SHARE_MEM_INPUT_BASE:
SMC_RET1(handle, GXBB_SHARE_MEM_INPUT_BASE);
case GXBB_SM_GET_SHARE_MEM_OUTPUT_BASE:
SMC_RET1(handle, GXBB_SHARE_MEM_OUTPUT_BASE);
case GXBB_SM_EFUSE_READ:
{
void *dst = (void *)GXBB_SHARE_MEM_OUTPUT_BASE;
uint64_t ret = gxbb_efuse_read(dst, (uint32_t)x1, x2);
SMC_RET1(handle, ret);
}
case GXBB_SM_EFUSE_USER_MAX:
SMC_RET1(handle, gxbb_efuse_user_max());
case GXBB_SM_JTAG_ON:
scpi_jtag_set_state(GXBB_JTAG_STATE_ON, x1);
SMC_RET1(handle, 0);
case GXBB_SM_JTAG_OFF:
scpi_jtag_set_state(GXBB_JTAG_STATE_OFF, x1);
SMC_RET1(handle, 0);
default:
ERROR("BL31: Unhandled SIP SMC: 0x%08x\n", smc_fid);
break;
}
SMC_RET1(handle, SMC_UNK);
}
DECLARE_RT_SVC(
gxbb_sip_handler,
OEN_SIP_START,
OEN_SIP_END,
SMC_TYPE_FAST,
NULL,
gxbb_sip_handler
);

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/*
* Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <stdint.h>
#include "gxl_private.h"
static int32_t modules_initialized = -1;
/*******************************************************************************
* Unknown commands related to something thermal-related
******************************************************************************/
void gxbb_thermal_unknown(void)
{
uint16_t ret;
if (modules_initialized == -1) {
scpi_efuse_read(&ret, 0, 2);
modules_initialized = ret;
}
scpi_unknown_thermal(10, 2, /* thermal */
13, 1); /* thermalver */
}

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/*
* Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <arch.h>
#include <platform_def.h>
#include <stdint.h>
#include "gxl_private.h"
/* The power domain tree descriptor */
static unsigned char power_domain_tree_desc[] = {
/* Number of root nodes */
PLATFORM_CLUSTER_COUNT,
/* Number of children for the first node */
PLATFORM_CLUSTER0_CORE_COUNT
};
/*******************************************************************************
* This function returns the ARM default topology tree information.
******************************************************************************/
const unsigned char *plat_get_power_domain_tree_desc(void)
{
return power_domain_tree_desc;
}
/*******************************************************************************
* This function implements a part of the critical interface between the psci
* generic layer and the platform that allows the former to query the platform
* to convert an MPIDR to a unique linear index. An error code (-1) is returned
* in case the MPIDR is invalid.
******************************************************************************/
int plat_core_pos_by_mpidr(u_register_t mpidr)
{
unsigned int cluster_id, cpu_id;
mpidr &= MPIDR_AFFINITY_MASK;
if (mpidr & ~(MPIDR_CLUSTER_MASK | MPIDR_CPU_MASK))
return -1;
cluster_id = (mpidr >> MPIDR_AFF1_SHIFT) & MPIDR_AFFLVL_MASK;
cpu_id = (mpidr >> MPIDR_AFF0_SHIFT) & MPIDR_AFFLVL_MASK;
if (cluster_id >= PLATFORM_CLUSTER_COUNT)
return -1;
if (cpu_id >= PLATFORM_MAX_CPUS_PER_CLUSTER)
return -1;
return plat_gxbb_calc_core_pos(mpidr);
}

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/*
* Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef PLAT_MACROS_S
#define PLAT_MACROS_S
#include <drivers/arm/gicv2.h>
#include <platform_def.h>
.section .rodata.gic_reg_name, "aS"
gicc_regs:
.asciz "gicc_hppir", "gicc_ahppir", "gicc_ctlr", ""
gicd_pend_reg:
.asciz "gicd_ispendr regs (Offsets 0x200 - 0x278)\n Offset:\t\t\tvalue\n"
newline:
.asciz "\n"
spacer:
.asciz ":\t\t0x"
/* ---------------------------------------------
* The below required platform porting macro
* prints out relevant GIC and CCI registers
* whenever an unhandled exception is taken in
* BL31.
* Clobbers: x0 - x10, x16, x17, sp
* ---------------------------------------------
*/
.macro plat_crash_print_regs
/* GICC registers */
mov_imm x17, GXBB_GICC_BASE
adr x6, gicc_regs
ldr w8, [x17, #GICC_HPPIR]
ldr w9, [x17, #GICC_AHPPIR]
ldr w10, [x17, #GICC_CTLR]
bl str_in_crash_buf_print
/* GICD registers */
mov_imm x16, GXBB_GICD_BASE
add x7, x16, #GICD_ISPENDR
adr x4, gicd_pend_reg
bl asm_print_str
gicd_ispendr_loop:
sub x4, x7, x16
cmp x4, #0x280
b.eq exit_print_gic_regs
bl asm_print_hex
adr x4, spacer
bl asm_print_str
ldr x4, [x7], #8
bl asm_print_hex
adr x4, newline
bl asm_print_str
b gicd_ispendr_loop
exit_print_gic_regs:
.endm
#endif /* PLAT_MACROS_S */

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/*
* Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef PLATFORM_DEF_H
#define PLATFORM_DEF_H
#include <arch.h>
#include <lib/utils_def.h>
#include "../gxl_def.h"
#define PLATFORM_LINKER_FORMAT "elf64-littleaarch64"
#define PLATFORM_LINKER_ARCH aarch64
/* Special value used to verify platform parameters from BL2 to BL31 */
#define GXBB_BL31_PLAT_PARAM_VAL ULL(0x0F1E2D3C4B5A6978)
#define PLATFORM_STACK_SIZE UL(0x1000)
#define PLATFORM_MAX_CPUS_PER_CLUSTER U(4)
#define PLATFORM_CLUSTER_COUNT U(1)
#define PLATFORM_CLUSTER0_CORE_COUNT PLATFORM_MAX_CPUS_PER_CLUSTER
#define PLATFORM_CORE_COUNT PLATFORM_CLUSTER0_CORE_COUNT
#define GXBB_PRIMARY_CPU U(0)
#define PLAT_MAX_PWR_LVL MPIDR_AFFLVL1
#define PLAT_NUM_PWR_DOMAINS (PLATFORM_CLUSTER_COUNT + \
PLATFORM_CORE_COUNT)
#define PLAT_MAX_RET_STATE U(1)
#define PLAT_MAX_OFF_STATE U(2)
/* Local power state for power domains in Run state. */
#define PLAT_LOCAL_STATE_RUN U(0)
/* Local power state for retention. Valid only for CPU power domains */
#define PLAT_LOCAL_STATE_RET U(1)
/* Local power state for power-down. Valid for CPU and cluster power domains. */
#define PLAT_LOCAL_STATE_OFF U(2)
/*
* Macros used to parse state information from State-ID if it is using the
* recommended encoding for State-ID.
*/
#define PLAT_LOCAL_PSTATE_WIDTH U(4)
#define PLAT_LOCAL_PSTATE_MASK ((U(1) << PLAT_LOCAL_PSTATE_WIDTH) - 1)
/*
* Some data must be aligned on the biggest cache line size in the platform.
* This is known only to the platform as it might have a combination of
* integrated and external caches.
*/
#define CACHE_WRITEBACK_SHIFT U(6)
#define CACHE_WRITEBACK_GRANULE (U(1) << CACHE_WRITEBACK_SHIFT)
/* Memory-related defines */
#define PLAT_PHY_ADDR_SPACE_SIZE (ULL(1) << 32)
#define PLAT_VIRT_ADDR_SPACE_SIZE (ULL(1) << 32)
#define MAX_MMAP_REGIONS 12
#define MAX_XLAT_TABLES 6
#endif /* PLATFORM_DEF_H */

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#
# Copyright (c) 2018, ARM Limited and Contributors. All rights reserved.
#
# SPDX-License-Identifier: BSD-3-Clause
#
include lib/xlat_tables_v2/xlat_tables.mk
PLAT_INCLUDES := -Iinclude/drivers/meson/ \
-Iplat/meson/gxl/include
GXBB_GIC_SOURCES := drivers/arm/gic/common/gic_common.c \
drivers/arm/gic/v2/gicv2_main.c \
drivers/arm/gic/v2/gicv2_helpers.c \
plat/common/plat_gicv2.c
PLAT_BL_COMMON_SOURCES := drivers/meson/console/aarch64/meson_console.S \
plat/meson/gxl/gxl_common.c \
plat/meson/gxl/gxl_topology.c \
${XLAT_TABLES_LIB_SRCS}
BL31_SOURCES += lib/cpus/aarch64/cortex_a53.S \
plat/common/plat_psci_common.c \
plat/meson/gxl/aarch64/gxl_helpers.S \
plat/meson/gxl/gxl_bl31_setup.c \
plat/meson/gxl/gxl_efuse.c \
plat/meson/gxl/gxl_mhu.c \
plat/meson/gxl/gxl_pm.c \
plat/meson/gxl/gxl_scpi.c \
plat/meson/gxl/gxl_sip_svc.c \
plat/meson/gxl/gxl_thermal.c \
${GXBB_GIC_SOURCES}
# Tune compiler for Cortex-A53
ifeq ($(notdir $(CC)),armclang)
TF_CFLAGS_aarch64 += -mcpu=cortex-a53
else ifneq ($(findstring clang,$(notdir $(CC))),)
TF_CFLAGS_aarch64 += -mcpu=cortex-a53
else
TF_CFLAGS_aarch64 += -mtune=cortex-a53
endif
# Build config flags
# ------------------
# Enable all errata workarounds for Cortex-A53
ERRATA_A53_855873 := 1
ERRATA_A53_819472 := 1
ERRATA_A53_824069 := 1
ERRATA_A53_827319 := 1
WORKAROUND_CVE_2017_5715 := 0
# Have different sections for code and rodata
SEPARATE_CODE_AND_RODATA := 1
# Use Coherent memory
USE_COHERENT_MEM := 1
# Use multi console API
MULTI_CONSOLE_API := 1
# Verify build config
# -------------------
ifneq (${MULTI_CONSOLE_API}, 1)
$(error Error: gxl needs MULTI_CONSOLE_API=1)
endif
ifneq (${RESET_TO_BL31}, 0)
$(error Error: gxl needs RESET_TO_BL31=0)
endif
ifeq (${ARCH},aarch32)
$(error Error: AArch32 not supported on gxl)
endif