diff options
Diffstat (limited to 'src/cpu/samsung/exynos5250/cpu.c')
| -rw-r--r-- | src/cpu/samsung/exynos5250/cpu.c | 56 |
1 files changed, 49 insertions, 7 deletions
diff --git a/src/cpu/samsung/exynos5250/cpu.c b/src/cpu/samsung/exynos5250/cpu.c index 2acebbb6e9..b51a591efb 100644 --- a/src/cpu/samsung/exynos5250/cpu.c +++ b/src/cpu/samsung/exynos5250/cpu.c @@ -1,3 +1,22 @@ +/* + * 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 <stdlib.h> #include <string.h> #include <stddef.h> @@ -6,15 +25,35 @@ #include <device/device.h> #include <cbmem.h> #include <arch/cache.h> -#include <cpu/samsung/exynos5250/fimd.h> -#include <cpu/samsung/exynos5250/s5p-dp-core.h> -#include <cpu/samsung/exynos5250/cpu.h> -#include "chip.h" +#include "fimd.h" +#include "dp-core.h" #include "cpu.h" +#include "clk.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; + +static void set_cpu_id(void) +{ + cpu_id = readl((void *)EXYNOS_PRO_ID); + cpu_id = (0xC000 | ((cpu_id & 0x00FFF000) >> 12)); + + /* + * 0xC200: EXYNOS4210 EVT0 + * 0xC210: EXYNOS4210 EVT1 + */ + if (cpu_id == 0xC200) { + cpu_id |= 0x10; + cpu_rev = 0; + } else if (cpu_id == 0xC210) { + cpu_rev = 1; + } +} + /* we distinguish a display port device from a raw graphics device * because there are dramatic differences in startup depending on * graphics usage. To make startup fast and easier to understand and @@ -64,7 +103,7 @@ static void exynos_displayport_init(device_t dev) */ fb_size = conf->xres * conf->yres * (conf->bpp / 8); lcdbase = (uintptr_t)cbmem_add(CBMEM_ID_CONSOLE, fb_size + 64*KiB); - printk(BIOS_SPEW, "lcd colormap base is %p\n", (void *)(lcdbase)); + printk(BIOS_SPEW, "LCD colormap base is %p\n", (void *)(lcdbase)); mmio_resource(dev, 0, lcdbase/KiB, 64); vi.cmap = (void *)lcdbase; @@ -89,7 +128,7 @@ static void exynos_displayport_init(device_t dev) lcdbase += 64*KiB; mmio_resource(dev, 1, lcdbase/KiB, (fb_size + KiB - 1)/KiB); printk(BIOS_DEBUG, - "Initializing exynos VGA, base %p\n", (void *)lcdbase); + "Initializing Exynos VGA, base %p\n", (void *)lcdbase); memset((void *)lcdbase, 0, fb_size); /* clear the framebuffer */ ret = lcd_ctrl_init(&vi, &panel, (void *)lcdbase); } @@ -99,7 +138,10 @@ static void cpu_init(device_t dev) exynos_displayport_init(dev); ram_resource(dev, 0, RAM_BASE_KB, RAM_SIZE_KB); - arch_cpu_init(); + set_cpu_id(); + + printk(BIOS_INFO, "CPU: S5P%X @ %ldMHz\n", + cpu_id, get_arm_clk() / (1024*1024)); } static void cpu_noop(device_t dev) |