diff options
Diffstat (limited to 'src/cpu/samsung/exynos5420/cpu.c')
| -rw-r--r-- | src/cpu/samsung/exynos5420/cpu.c | 183 |
1 files changed, 0 insertions, 183 deletions
diff --git a/src/cpu/samsung/exynos5420/cpu.c b/src/cpu/samsung/exynos5420/cpu.c deleted file mode 100644 index bfb8421910..0000000000 --- a/src/cpu/samsung/exynos5420/cpu.c +++ /dev/null @@ -1,183 +0,0 @@ -/* - * This file is part of the coreboot project. - * - * Copyright 2013 Google Inc. - * Copyright (C) 2012 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. - * - * 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> -#include <delay.h> -#include <console/console.h> -#include <device/device.h> -#include <cbmem.h> -#include <arch/cache.h> -#include "dp.h" -#include "fimd.h" -#include "cpu.h" -#include "clk.h" -#include "chip.h" - -#include <ec/google/chromeec/ec.h> - -static unsigned int cpu_id; -static unsigned int cpu_rev; - -static void set_cpu_id(void) -{ - u32 pro_id = (read32((void *)EXYNOS5_PRO_ID) & 0x00FFF000) >> 12; - - switch (pro_id) { - case 0x200: - /* Exynos4210 EVT0 */ - cpu_id = 0x4210; - cpu_rev = 0; - break; - case 0x210: - /* Exynos4210 EVT1 */ - cpu_id = 0x4210; - break; - case 0x412: - /* Exynos4412 */ - cpu_id = 0x4412; - break; - case 0x520: - /* Exynos5250 */ - cpu_id = 0x5250; - break; - case 0x420: - /* Exynos5420 */ - cpu_id = 0x5420; - break; - } -} - -/* 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 - * debug we explicitly name this common case. The alternate approach, - * involving lots of machine and callbacks, is hard to debug and - * verify. - */ -static void exynos_displayport_init(device_t dev, u32 lcdbase, - unsigned long fb_size) -{ - struct cpu_samsung_exynos5420_config *conf = dev->chip_info; - /* put these on the stack. If, at some point, we want to move - * this code to a pre-ram stage, it will be much easier. - */ - struct exynos5_fimd_panel panel; - memset(&panel, 0, sizeof(panel)); - - panel.is_dp = 1; /* Display I/F is eDP */ - /* while it is true that we did a memset to zero, - * we leave some 'set to zero' entries here to make - * it clear what's going on. Graphics is confusing. - */ - panel.is_mipi = 0; - panel.fixvclk = 0; - panel.ivclk = 0; - panel.clkval_f = conf->clkval_f; - panel.upper_margin = conf->upper_margin; - panel.lower_margin = conf->lower_margin; - panel.vsync = conf->vsync; - panel.left_margin = conf->left_margin; - panel.right_margin = conf->right_margin; - panel.hsync = conf->hsync; - panel.xres = conf->xres; - panel.yres = conf->yres; - - printk(BIOS_SPEW, "LCD framebuffer @%p\n", (void *)(lcdbase)); - memset((void *)lcdbase, 0, fb_size); /* clear the framebuffer */ - - /* - * We need to clean and invalidate the framebuffer region and disable - * caching as well. We assume that our dcache <--> memory address - * space is identity-mapped in 1MB chunks, so align accordingly. - * - * Note: We may want to do something clever to ensure the framebuffer - * region is aligned such that we don't change dcache policy for other - * stuff inadvertantly. - */ - 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); - - mmio_resource(dev, 1, lcdbase/KiB, CEIL_DIV(fb_size, KiB)); -} - -static void tps65090_thru_ec_fet_disable(int index) -{ - uint8_t value = 0; - - if (google_chromeec_i2c_xfer(0x48, 0xe + index, 1, &value, 1, 0)) { - printk(BIOS_ERR, - "Error sending i2c pass through command to EC.\n"); - return; - } -} - -static void cpu_enable(device_t 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 - FB_SIZE_KB); - mmio_resource(dev, 1, lcdbase / KiB, CEIL_DIV(fb_size, KiB)); - - /* - * Disable LCD FETs before we do anything with the display. - * FIXME(dhendrix): This is a gross hack and should be done - * elsewhere (romstage?). - */ - tps65090_thru_ec_fet_disable(1); - tps65090_thru_ec_fet_disable(6); - - exynos_displayport_init(dev, lcdbase, fb_size); - - set_cpu_id(); -} - -static void cpu_init(device_t dev) -{ - printk(BIOS_INFO, "CPU: S5P%X @ %ldMHz\n", - cpu_id, get_arm_clk() / 1000000); -} - -static void cpu_noop(device_t dev) -{ -} - -static struct device_operations cpu_ops = { - .read_resources = cpu_noop, - .set_resources = cpu_noop, - .enable_resources = cpu_enable, - .init = cpu_init, - .scan_bus = 0, -}; - -static void enable_exynos5420_dev(device_t dev) -{ - dev->ops = &cpu_ops; -} - -struct chip_operations cpu_samsung_exynos5420_ops = { - CHIP_NAME("CPU Samsung Exynos 5420") - .enable_dev = enable_exynos5420_dev, -}; |