diff options
Diffstat (limited to 'src/cpu/samsung/exynos5250')
| -rw-r--r-- | src/cpu/samsung/exynos5250/Kconfig | 38 | ||||
| -rw-r--r-- | src/cpu/samsung/exynos5250/Makefile.inc | 2 | ||||
| -rw-r--r-- | src/cpu/samsung/exynos5250/bootblock.c | 20 | ||||
| -rw-r--r-- | src/cpu/samsung/exynos5250/cpu.c | 3 | ||||
| -rw-r--r-- | src/cpu/samsung/exynos5250/wakeup.c | 52 | ||||
| -rw-r--r-- | src/cpu/samsung/exynos5250/wakeup.h | 37 |
6 files changed, 152 insertions, 0 deletions
diff --git a/src/cpu/samsung/exynos5250/Kconfig b/src/cpu/samsung/exynos5250/Kconfig index cc67abd6ff..eaf6668da6 100644 --- a/src/cpu/samsung/exynos5250/Kconfig +++ b/src/cpu/samsung/exynos5250/Kconfig @@ -97,3 +97,41 @@ config SYS_TEXT_BASE config COREBOOT_TABLES_SIZE hex default 0x4000000 + +choice CONSOLE_SERIAL_UART_CHOICES + prompt "Serial Console UART" + default CONSOLE_SERIAL_UART3 + depends on CONSOLE_SERIAL_UART + +config CONSOLE_SERIAL_UART0 + bool "UART0" + help + Serial console on UART0 + +config CONSOLE_SERIAL_UART1 + bool "UART1" + help + Serial console on UART1 + +config CONSOLE_SERIAL_UART2 + bool "UART2" + help + Serial console on UART2 + +config CONSOLE_SERIAL_UART3 + bool "UART3" + help + Serial console on UART3 + +endchoice + +config CONSOLE_SERIAL_UART_ADDRESS + hex + depends on CONSOLE_SERIAL_UART + default 0x12c00000 if CONSOLE_SERIAL_UART0 + default 0x12c10000 if CONSOLE_SERIAL_UART1 + default 0x12c20000 if CONSOLE_SERIAL_UART2 + default 0x12c30000 if CONSOLE_SERIAL_UART3 + help + Map the UART names to the respective MMIO address. + diff --git a/src/cpu/samsung/exynos5250/Makefile.inc b/src/cpu/samsung/exynos5250/Makefile.inc index 2cd34284b4..6449714a51 100644 --- a/src/cpu/samsung/exynos5250/Makefile.inc +++ b/src/cpu/samsung/exynos5250/Makefile.inc @@ -10,6 +10,7 @@ bootblock-$(CONFIG_EARLY_CONSOLE) += clock.c bootblock-$(CONFIG_EARLY_CONSOLE) += monotonic_timer.c bootblock-$(CONFIG_EARLY_CONSOLE) += soc.c bootblock-$(CONFIG_EARLY_CONSOLE) += uart.c +bootblock-y += wakeup.c romstage-y += clock.c romstage-y += clock_init.c @@ -21,6 +22,7 @@ romstage-y += mct.c romstage-y += monotonic_timer.c romstage-$(CONFIG_EARLY_CONSOLE) += soc.c romstage-$(CONFIG_EARLY_CONSOLE) += uart.c +romstage-y += wakeup.c #ramstage-y += tzpc_init.c ramstage-y += clock.c diff --git a/src/cpu/samsung/exynos5250/bootblock.c b/src/cpu/samsung/exynos5250/bootblock.c index 949468fbef..e4d0f6c202 100644 --- a/src/cpu/samsung/exynos5250/bootblock.c +++ b/src/cpu/samsung/exynos5250/bootblock.c @@ -17,7 +17,27 @@ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ +#include <console/console.h> +#include "clk.h" +#include "wakeup.h" + void bootblock_cpu_init(void); void bootblock_cpu_init(void) { + /* kick off the multi-core timer. + * We want to do this as early as we can. + */ + mct_start(); + + if (get_wakeup_state() == WAKEUP_DIRECT) { + wakeup(); + /* Never returns. */ + } + + /* For most ARM systems, we have to initialize firmware media source + * (ex, SPI, SD/MMC, or eMMC) now; but for Exynos platform, that is + * already handled by iROM so there's no need to setup again. + */ + + console_init(); } diff --git a/src/cpu/samsung/exynos5250/cpu.c b/src/cpu/samsung/exynos5250/cpu.c index 8bf0d49f96..c49dec453d 100644 --- a/src/cpu/samsung/exynos5250/cpu.c +++ b/src/cpu/samsung/exynos5250/cpu.c @@ -8,6 +8,7 @@ #include <arch/cache.h> #include <cpu/samsung/exynos5250/fimd.h> #include <cpu/samsung/exynos5-common/s5p-dp-core.h> +#include <cpu/samsung/exynos5-common/cpu.h> #include "chip.h" #include "cpu.h" @@ -97,6 +98,8 @@ static void cpu_init(device_t dev) { exynos_displayport_init(dev); ram_resource(dev, 0, RAM_BASE_KB, RAM_SIZE_KB); + + arch_cpu_init(); } static void cpu_noop(device_t dev) diff --git a/src/cpu/samsung/exynos5250/wakeup.c b/src/cpu/samsung/exynos5250/wakeup.c new file mode 100644 index 0000000000..1e8d892bc8 --- /dev/null +++ b/src/cpu/samsung/exynos5250/wakeup.c @@ -0,0 +1,52 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2013 Google, Inc. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include <console/console.h> +#include <cpu/samsung/exynos5250/power.h> +#include <cpu/samsung/exynos5-common/exynos5-common.h> + +#include "wakeup.h" + +void wakeup(void) +{ + if (wakeup_need_reset()) + power_reset(); + + power_init(); /* Ensure ps_hold_setup() for early wakeup. */ + power_exit_wakeup(); + /* Should never return. */ + die("Failed to wake up.\n"); +} + +int get_wakeup_state(void) +{ + uint32_t status = power_read_reset_status(); + + /* DIDLE/LPA can be resumed without clock reset (ex, bootblock), + * and SLEEP requires resetting clock (should be done in ROM stage). + */ + + if (status == S5P_CHECK_DIDLE || status == S5P_CHECK_LPA) + return WAKEUP_DIRECT; + + if (status == S5P_CHECK_SLEEP) + return WAKEUP_NEED_CLOCK_RESET; + + return IS_NOT_WAKEUP; +} diff --git a/src/cpu/samsung/exynos5250/wakeup.h b/src/cpu/samsung/exynos5250/wakeup.h new file mode 100644 index 0000000000..ed49d687f6 --- /dev/null +++ b/src/cpu/samsung/exynos5250/wakeup.h @@ -0,0 +1,37 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2013 Google, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef WAKEUP_H +#define WAKEUP_H + +enum { + // A normal boot (not suspend/resume) + IS_NOT_WAKEUP, + // A wake up event that can be resumed any time + WAKEUP_DIRECT, + // A wake up event that must be resumed only after + // clock and memory controllers are re-initialized + WAKEUP_NEED_CLOCK_RESET, +}; + +int wakeup_need_reset(void); +int get_wakeup_state(void); +void wakeup(void); + +#endif /* WAKEUP_H */ |