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-rw-r--r--cpu/mpc512x/diu.c189
1 files changed, 189 insertions, 0 deletions
diff --git a/cpu/mpc512x/diu.c b/cpu/mpc512x/diu.c
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+/*
+ * 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/pixis.h"
+#include "../../board/freescale/common/fsl_diu_fb.h"
+
+#if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE)
+#include <devices.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", *clkdvdr);
+ temp = *clkdvdr & 0xFFFFFF00;
+ *clkdvdr = temp | (pixval & 0xFF);
+ debug("DIU: Modified value of CLKDVDR = 0x%08x\n", *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;
+
+ /* fill in Graphic device struct */
+ sprintf(pGD->modeIdent, "%dx%dx%d %ldkHz %ldHz",
+ 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) */