diff options
Diffstat (limited to 'src/cpu/samsung/exynos5250')
| -rw-r--r-- | src/cpu/samsung/exynos5250/Kconfig | 1 | ||||
| -rw-r--r-- | src/cpu/samsung/exynos5250/Makefile.inc | 2 | ||||
| -rw-r--r-- | src/cpu/samsung/exynos5250/cbmem.c | 28 | ||||
| -rw-r--r-- | src/cpu/samsung/exynos5250/cpu.c | 32 | ||||
| -rw-r--r-- | src/cpu/samsung/exynos5250/cpu.h | 10 |
5 files changed, 54 insertions, 19 deletions
diff --git a/src/cpu/samsung/exynos5250/Kconfig b/src/cpu/samsung/exynos5250/Kconfig index 38be2d4737..6731bb60e4 100644 --- a/src/cpu/samsung/exynos5250/Kconfig +++ b/src/cpu/samsung/exynos5250/Kconfig @@ -3,6 +3,7 @@ config CPU_SAMSUNG_EXYNOS5250 select HAVE_MONOTONIC_TIMER select HAVE_UART_SPECIAL select EARLY_CONSOLE + select DYNAMIC_CBMEM bool default n diff --git a/src/cpu/samsung/exynos5250/Makefile.inc b/src/cpu/samsung/exynos5250/Makefile.inc index 9b346c6ca3..e029c672e6 100644 --- a/src/cpu/samsung/exynos5250/Makefile.inc +++ b/src/cpu/samsung/exynos5250/Makefile.inc @@ -33,6 +33,7 @@ romstage-y += gpio.c romstage-y += timer.c romstage-y += i2c.c #romstage-y += wdt.c +romstage-y += cbmem.c ramstage-y += spi.c ramstage-y += clock.c @@ -50,6 +51,7 @@ ramstage-y += i2c.c ramstage-y += dp-reg.c ramstage-y += fb.c ramstage-y += usb.c +ramstage-y += cbmem.c exynos5250_add_bl1: $(obj)/coreboot.pre printf " DD Adding Samsung Exynos5250 BL1\n" diff --git a/src/cpu/samsung/exynos5250/cbmem.c b/src/cpu/samsung/exynos5250/cbmem.c new file mode 100644 index 0000000000..e77af99ffc --- /dev/null +++ b/src/cpu/samsung/exynos5250/cbmem.c @@ -0,0 +1,28 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 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 + */ + +#include <stddef.h> +#include <cbmem.h> +#include "cpu.h" + +void *cbmem_top(void) +{ + return (void *)(get_fb_base_kb() * KiB); +} + diff --git a/src/cpu/samsung/exynos5250/cpu.c b/src/cpu/samsung/exynos5250/cpu.c index 61f937b378..c3632744da 100644 --- a/src/cpu/samsung/exynos5250/cpu.c +++ b/src/cpu/samsung/exynos5250/cpu.c @@ -32,9 +32,6 @@ #include "usb.h" #include "chip.h" -#define RAM_BASE_KB (CONFIG_SYS_SDRAM_BASE >> 10) -#define RAM_SIZE_KB (CONFIG_DRAM_SIZE_MB << 10UL) - static unsigned int cpu_id; static unsigned int cpu_rev; @@ -62,7 +59,8 @@ static void set_cpu_id(void) * involving lots of machine and callbacks, is hard to debug and * verify. */ -static void exynos_displayport_init(device_t dev) +static void exynos_displayport_init(device_t dev, u32 lcdbase, + unsigned long fb_size) { int ret; struct cpu_samsung_exynos5250_config *conf = dev->chip_info; @@ -70,9 +68,6 @@ static void exynos_displayport_init(device_t dev) * this code to a pre-ram stage, it will be much easier. */ struct exynos5_fimd_panel panel; - unsigned long int fb_size; - u32 lcdbase; - memset(&panel, 0, sizeof(panel)); panel.is_dp = 1; /* Display I/F is eDP */ @@ -93,11 +88,7 @@ static void exynos_displayport_init(device_t dev) panel.xres = conf->xres; panel.yres = conf->yres; - /* The size is a magic number from hardware. */ - fb_size = conf->xres * conf->yres * (conf->bpp / 8); - lcdbase = (uintptr_t)cbmem_add(CBMEM_ID_CONSOLE, fb_size); - printk(BIOS_SPEW, "LCD framebuffer base is %p\n", (void *)(lcdbase)); - + printk(BIOS_SPEW, "LCD framebuffer @%p\n", (void *)(lcdbase)); memset((void *)lcdbase, 0, fb_size); /* clear the framebuffer */ /* @@ -111,23 +102,26 @@ static void exynos_displayport_init(device_t dev) */ uint32_t lower = ALIGN_DOWN(lcdbase, MiB); uint32_t upper = ALIGN_UP(lcdbase + fb_size, MiB); + dcache_clean_invalidate_by_mva(lower, upper - lower); - mmu_config_range(lower/MiB, (upper - lower)/MiB, DCACHE_OFF); + mmu_config_range(lower / MiB, (upper - lower) / MiB, DCACHE_OFF); + + printk(BIOS_DEBUG, "Initializing Exynos LCD.\n"); - mmio_resource(dev, 1, lcdbase/KiB, (fb_size + KiB - 1)/KiB); - printk(BIOS_DEBUG, - "Initializing Exynos VGA, base %p\n", (void *)lcdbase); ret = lcd_ctrl_init(fb_size, &panel, (void *)lcdbase); } static void cpu_enable(device_t dev) { - exynos_displayport_init(dev); + unsigned long fb_size = FB_SIZE_KB * KiB; + u32 lcdbase = get_fb_base_kb() * KiB; - ram_resource(dev, 0, RAM_BASE_KB, RAM_SIZE_KB); + ram_resource(dev, 0, RAM_BASE_KB, RAM_SIZE_KB - FB_SIZE_KB); + mmio_resource(dev, 1, lcdbase / KiB, (fb_size + KiB - 1) / KiB); - set_cpu_id(); + exynos_displayport_init(dev, lcdbase, fb_size); + set_cpu_id(); } static void cpu_init(device_t dev) diff --git a/src/cpu/samsung/exynos5250/cpu.h b/src/cpu/samsung/exynos5250/cpu.h index 7b12c945d2..254106ad81 100644 --- a/src/cpu/samsung/exynos5250/cpu.h +++ b/src/cpu/samsung/exynos5250/cpu.h @@ -125,4 +125,14 @@ void exynos5250_config_l2_cache(void); extern struct tmu_info exynos5250_tmu_info; +/* TODO clean up defines. */ +#define FB_SIZE_KB 4096 +#define RAM_BASE_KB (CONFIG_SYS_SDRAM_BASE >> 10) +#define RAM_SIZE_KB (CONFIG_DRAM_SIZE_MB << 10UL) + +static inline u32 get_fb_base_kb(void) +{ + return RAM_BASE_KB + RAM_SIZE_KB - FB_SIZE_KB; +} + #endif /* _EXYNOS5250_CPU_H */ |