diff options
Diffstat (limited to 'arch/powerpc/cpu/mpc512x/diu.c')
| -rw-r--r-- | arch/powerpc/cpu/mpc512x/diu.c | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/arch/powerpc/cpu/mpc512x/diu.c b/arch/powerpc/cpu/mpc512x/diu.c new file mode 100644 index 0000000..9361161 --- /dev/null +++ b/arch/powerpc/cpu/mpc512x/diu.c @@ -0,0 +1,188 @@ +/* + * Copyright 2008 Freescale Semiconductor, Inc. + * York Sun <yorksun@freescale.com> + * + * FSL DIU Framebuffer driver + * + * See file CREDITS for list of people who contributed to this + * project. + * + * 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; either version 2 of + * the License, or (at your option) any later version. + * + * 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., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include <common.h> +#include <command.h> +#include <asm/io.h> + +#include "../../../../board/freescale/common/fsl_diu_fb.h" + +#if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE) +#include <stdio_dev.h> +#include <video_fb.h> +#endif + +#ifdef CONFIG_FSL_DIU_LOGO_BMP +extern unsigned int FSL_Logo_BMP[]; +#else +#define FSL_Logo_BMP NULL +#endif + +static int xres, yres; + +void diu_set_pixel_clock(unsigned int pixclock) +{ + volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; + volatile clk512x_t *clk = &immap->clk; + volatile unsigned int *clkdvdr = &clk->scfr[0]; + unsigned long speed_ccb, temp, pixval; + + speed_ccb = get_bus_freq(0) * 4; + temp = 1000000000/pixclock; + temp *= 1000; + pixval = speed_ccb / temp; + debug("DIU pixval = %lu\n", pixval); + + /* Modify PXCLK in GUTS CLKDVDR */ + debug("DIU: Current value of CLKDVDR = 0x%08x\n", in_be32(clkdvdr)); + temp = in_be32(clkdvdr) & 0xFFFFFF00; + out_be32(clkdvdr, temp | (pixval & 0xFF)); + debug("DIU: Modified value of CLKDVDR = 0x%08x\n", in_be32(clkdvdr)); +} + +char *valid_bmp(char *addr) +{ + unsigned long h_addr; + + h_addr = simple_strtoul(addr, NULL, 16); + if (h_addr < CONFIG_SYS_FLASH_BASE || + h_addr >= (CONFIG_SYS_FLASH_BASE + CONFIG_SYS_FLASH_SIZE - 1)) { + printf("bmp addr %lx is not a valid flash address\n", h_addr); + return 0; + } else if ((*(char *)(h_addr) != 'B') || (*(char *)(h_addr+1) != 'M')) { + printf("bmp addr is not a bmp\n"); + return 0; + } else + return (char *)h_addr; +} + +int mpc5121_diu_init(void) +{ + unsigned int pixel_format; + char *bmp = NULL; + char *bmp_env; + + xres = 1024; + yres = 768; + pixel_format = 0x88883316; + + debug("mpc5121_diu_init\n"); + bmp_env = getenv("diu_bmp_addr"); + if (bmp_env) { + bmp = valid_bmp(bmp_env); + } + if (!bmp) + bmp = (char *)FSL_Logo_BMP; + return fsl_diu_init(xres, pixel_format, 0, (unsigned char *)bmp); +} + +int mpc5121diu_init_show_bmp(cmd_tbl_t *cmdtp, + int flag, int argc, char *argv[]) +{ + unsigned int addr; + + if (argc < 2) { + cmd_usage(cmdtp); + return 1; + } + + if (!strncmp(argv[1], "init", 4)) { +#if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE) + fsl_diu_clear_screen(); + drv_video_init(); +#else + return mpc5121_diu_init(); +#endif + } else { + addr = simple_strtoul(argv[1], NULL, 16); + fsl_diu_clear_screen(); + fsl_diu_display_bmp((unsigned char *)addr, 0, 0, 0); + } + + return 0; +} + +U_BOOT_CMD( + diufb, CONFIG_SYS_MAXARGS, 1, mpc5121diu_init_show_bmp, + "Init or Display BMP file", + "init\n - initialize DIU\n" + "addr\n - display bmp at address 'addr'" + ); + + +#if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE) + +/* + * The Graphic Device + */ +GraphicDevice ctfb; +void *video_hw_init(void) +{ + GraphicDevice *pGD = (GraphicDevice *) &ctfb; + struct fb_info *info; + + if (mpc5121_diu_init() < 0) + return NULL; + + /* fill in Graphic device struct */ + sprintf(pGD->modeIdent, "%dx%dx%d %dkHz %dHz", + xres, yres, 32, 64, 60); + + pGD->frameAdrs = (unsigned int)fsl_fb_open(&info); + pGD->winSizeX = xres; + pGD->winSizeY = yres - info->logo_height; + pGD->plnSizeX = pGD->winSizeX; + pGD->plnSizeY = pGD->winSizeY; + + pGD->gdfBytesPP = 4; + pGD->gdfIndex = GDF_32BIT_X888RGB; + + pGD->isaBase = 0; + pGD->pciBase = 0; + pGD->memSize = info->screen_size - info->logo_size; + + /* Cursor Start Address */ + pGD->dprBase = 0; + pGD->vprBase = 0; + pGD->cprBase = 0; + + return (void *)pGD; +} + +/** + * Set the LUT + * + * @index: color number + * @r: red + * @b: blue + * @g: green + */ +void video_set_lut + (unsigned int index, unsigned char r, unsigned char g, unsigned char b) +{ + return; +} + +#endif /* defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE) */ |