Stefan Reinauer (stefan.reinauer@coreboot.org) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/14913
-gerrit
commit 586243c73ecfa12116de5dae35407dbb6a8d5db2 Author: Akshay Saraswat akshay.s@samsung.com Date: Thu Aug 7 16:26:12 2014 +0530
Exynos7: Add GIC initialization
Adding initial GIC setup for Exynos7 in this patch.
Change-Id: I9bdcd8924950b5442914a2f669ecfad52ff8dd2e Signed-off-by: Akshay Saraswat akshay.s@samsung.com Signed-off-by: Stefan Reinauer stefan.reinauer@coreboot.org --- src/soc/samsung/exynos7/Makefile.inc | 1 + src/soc/samsung/exynos7/bootblock.c | 4 ++++ src/soc/samsung/exynos7/gic.c | 32 ++++++++++++++++++++++++++++++ src/soc/samsung/exynos7/include/soc/gic.h | 33 +++++++++++++++++++++++++++++++ 4 files changed, 70 insertions(+)
diff --git a/src/soc/samsung/exynos7/Makefile.inc b/src/soc/samsung/exynos7/Makefile.inc index 93f21c2..f954bd3 100644 --- a/src/soc/samsung/exynos7/Makefile.inc +++ b/src/soc/samsung/exynos7/Makefile.inc @@ -23,6 +23,7 @@ bootblock-y += bootblock.c bootblock-y += clock.c bootblock-y += clock_init.c bootblock-y += dmc_init_lpddr4.c +bootblock-y += gic.c bootblock-y += gpio.c bootblock-y += mct.c bootblock-y += monotonic_timer.c diff --git a/src/soc/samsung/exynos7/bootblock.c b/src/soc/samsung/exynos7/bootblock.c index fab66a1..2f3208b 100644 --- a/src/soc/samsung/exynos7/bootblock.c +++ b/src/soc/samsung/exynos7/bootblock.c @@ -21,6 +21,7 @@ #include <soc/clock.h> #include <soc/cpu.h> #include <soc/dmc.h> +#include <soc/gic.h> #include <soc/mct.h> #include <soc/pinmux.h> #include <soc/power.h> @@ -60,6 +61,9 @@ void bootblock_cpu_init(void) /* Initialize trustzone */ trustzone_init();
+ /* Initialize GIC */ + gic_init(); + /* Set GPIOs for UART */ if (IS_ENABLED(CONFIG_CONSOLE_SERIAL_UART0)) exynos_pinmux_uart0(); diff --git a/src/soc/samsung/exynos7/gic.c b/src/soc/samsung/exynos7/gic.c new file mode 100644 index 0000000..17326ea --- /dev/null +++ b/src/soc/samsung/exynos7/gic.c @@ -0,0 +1,32 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2014 Samsung Electronics + * + * 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. + */ + +#include <arch/io.h> +#include <soc/gic.h> + +/* Setting Generic Interrupt Controller */ +void gic_init(void) +{ + uint64_t addr, start = 0, end = 0; + + start = EXYNOS7_GIC_DIST_BASE + 0x80; + end = start + (NUM_GIC_INTERFACES * 0x4); + + for (addr = start; addr < end; addr += 0x4) + write32((void *)addr, GIC_DIST_VAL); + + write32((void *)EXYNOS7_GIC_CPU_INTERFACE, 0xb); + write32((void *)EXYNOS7_GIC_CPU_INTERFACE + 0x4, 0xff); +} diff --git a/src/soc/samsung/exynos7/include/soc/gic.h b/src/soc/samsung/exynos7/include/soc/gic.h new file mode 100644 index 0000000..8186dc5 --- /dev/null +++ b/src/soc/samsung/exynos7/include/soc/gic.h @@ -0,0 +1,33 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2014 Samsung Electronics + * + * 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. + */ + +#ifndef _CPU_SAMSUNG_EXYNOS7_GIC_H_ +#define _CPU_SAMSUNG_EXYNOS7_GIC_H_ + +#include <soc/cpu.h> + +#define EXYNOS7_GIC_DIST_BASE (EXYNOS7_GIC_BASE + 0x1000) +#define EXYNOS7_GIC_CPU_INTERFACE (EXYNOS7_GIC_BASE + 0x2000) +#define EXYNOS7_GICC_HPPIR (EXYNOS7_GIC_CPU_INTERFACE + 0x18) + +#define NUM_GIC_INTERFACES 16 +#define GIC_DIST_VAL 0xffffffff + +#define GIC_SPURIOUS_INTERRUPT 1023 + +/* Setting Generic Interrupt Controller */ +void gic_init(void); + +#endif /* _CPU_SAMSUNG_EXYNOS7_GIC_H_ */
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Stefan Reinauer