Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / u-boot / board / freescale / m52277evb / m52277evb.c

diff --git a/qemu/roms/u-boot/board/freescale/m52277evb/m52277evb.c b/qemu/roms/u-boot/board/freescale/m52277evb/m52277evb.c
new file mode 100644 (file)
index 0000000..a1127e5
--- /dev/null
+++ b/qemu/roms/u-boot/board/freescale/m52277evb/m52277evb.c
@@ -0,0 +1,90 @@
+/*
+ * (C) Copyright 2000-2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * Copyright (C) 2004-2007, 2012 Freescale Semiconductor, Inc.
+ * TsiChung Liew (Tsi-Chung.Liew@freescale.com)
+ *
+ * SPDX-License-Identifier:    GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/immap.h>
+#include <asm/io.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int checkboard(void)
+{
+       puts("Board: ");
+       puts("Freescale M52277 EVB\n");
+       return 0;
+};
+
+phys_size_t initdram(int board_type)
+{
+       u32 dramsize;
+
+#ifdef CONFIG_CF_SBF
+       /*
+        * Serial Boot: The dram is already initialized in start.S
+        * only require to return DRAM size
+        */
+       dramsize = CONFIG_SYS_SDRAM_SIZE * 0x100000;
+#else
+       sdramc_t *sdram = (sdramc_t *)(MMAP_SDRAM);
+       gpio_t *gpio = (gpio_t *)(MMAP_GPIO);
+       u32 i;
+
+       dramsize = CONFIG_SYS_SDRAM_SIZE * 0x100000;
+
+       for (i = 0x13; i < 0x20; i++) {
+               if (dramsize == (1 << i))
+                       break;
+       }
+       i--;
+
+       out_8(&gpio->mscr_sdram, CONFIG_SYS_SDRAM_DRV_STRENGTH);
+
+       out_be32(&sdram->sdcs0, CONFIG_SYS_SDRAM_BASE | i);
+
+       out_be32(&sdram->sdcfg1, CONFIG_SYS_SDRAM_CFG1);
+       out_be32(&sdram->sdcfg2, CONFIG_SYS_SDRAM_CFG2);
+
+       /* Issue PALL */
+       out_be32(&sdram->sdcr, CONFIG_SYS_SDRAM_CTRL | 2);
+       __asm__("nop");
+
+       /* Issue LEMR */
+       out_be32(&sdram->sdmr, CONFIG_SYS_SDRAM_MODE);
+       __asm__("nop");
+       out_be32(&sdram->sdmr, CONFIG_SYS_SDRAM_EMOD);
+       __asm__("nop");
+
+       udelay(1000);
+
+       /* Issue PALL */
+       out_be32(&sdram->sdcr, CONFIG_SYS_SDRAM_CTRL | 2);
+       __asm__("nop");
+
+       /* Perform two refresh cycles */
+       out_be32(&sdram->sdcr, CONFIG_SYS_SDRAM_CTRL | 4);
+       __asm__("nop");
+       out_be32(&sdram->sdcr, CONFIG_SYS_SDRAM_CTRL | 4);
+       __asm__("nop");
+
+       out_be32(&sdram->sdcr,
+               (CONFIG_SYS_SDRAM_CTRL & ~0x80000000) | 0x10000c00);
+
+       udelay(100);
+#endif
+       return (dramsize);
+};
+
+int testdram(void)
+{
+       /* TODO: XXX XXX XXX */
+       printf("DRAM test not implemented!\n");
+
+       return (0);
+}