1 files changed, 132 insertions, 0 deletions
diff --git a/qemu/roms/u-boot/board/emk/top860/top860.c b/qemu/roms/u-boot/board/emk/top860/top860.c
new file mode 100644
index 000000000..32c77f84e
--- /dev/null
+++ b/qemu/roms/u-boot/board/emk/top860/top860.c
@@ -0,0 +1,132 @@
+/*
+ * (C) Copyright 2003
+ * EMK Elektronik GmbH <www.emk-elektronik.de>
+ * Reinhard Meyer <r.meyer@emk-elektronik.de>
+ *
+ * Board specific routines for the TOP860
+ *
+ * - initialisation
+ * - interface to VPD data (mac address, clock speeds)
+ * - memory controller
+ * - serial io initialisation
+ * - ethernet io initialisation
+ *
+ * -----------------------------------------------------------------
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <commproc.h>
+#include <mpc8xx.h>
+#include <asm/io.h>
+
+/*****************************************************************************
+ * UPM table for 60ns EDO RAM at 25 MHz bus/external clock
+ *****************************************************************************/
+static const uint edo_60ns_25MHz_tbl[] = {
+
+/* single read   (offset 0x00 in upm ram) */
+    0x0ff3fc04,0x08f3fc04,0x00f3fc04,0x00f3fc00,
+    0x33f7fc07,0xfffffc05,0xfffffc05,0xfffffc05,
+/* burst read    (offset 0x08 in upm ram) */
+    0x0ff3fc04,0x08f3fc04,0x00f3fc0c,0x0ff3fc40,
+    0x0cf3fc04,0x03f3fc48,0x0cf3fc04,0x03f3fc48,
+    0x0cf3fc04,0x03f3fc00,0x3ff7fc07,0xfffffc05,
+    0xfffffc05,0xfffffc05,0xfffffc05,0xfffffc05,
+/* single write  (offset 0x18 in upm ram) */
+    0x0ffffc04,0x08fffc04,0x30fffc00,0xf1fffc07,
+    0xfffffc05,0xfffffc05,0xfffffc05,0xfffffc05,
+/* burst write   (offset 0x20 in upm ram) */
+    0x0ffffc04,0x08fffc00,0x00fffc04,0x03fffc4c,
+    0x00fffc00,0x07fffc4c,0x00fffc00,0x0ffffc4c,
+    0x00fffc00,0x3ffffc07,0xfffffc05,0xfffffc05,
+    0xfffffc05,0xfffffc05,0xfffffc05,0xfffffc05,
+/* refresh       (offset 0x30 in upm ram) */
+    0xc0fffc04,0x07fffc04,0x0ffffc04,0x0ffffc04,
+    0xfffffc05,0xfffffc05,0xfffffc05,0xfffffc05,
+    0xfffffc05,0xfffffc05,0xfffffc05,0xfffffc05,
+/* exception     (offset 0x3C in upm ram) */
+    0xfffffc07,0xfffffc03,0xfffffc05,0xfffffc05,
+};
+
+/*****************************************************************************
+ * Print Board Identity
+ *****************************************************************************/
+int checkboard (void)
+{
+	puts ("Board:"CONFIG_IDENT_STRING"\n");
+	return (0);
+}
+
+/*****************************************************************************
+ * Initialize DRAM controller
+ *****************************************************************************/
+phys_size_t initdram (int board_type)
+{
+	volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
+	volatile memctl8xx_t *memctl = &immap->im_memctl;
+
+	/*
+	 * Only initialize memory controller when running from FLASH.
+	 * When running from RAM, don't touch it.
+	 */
+	if ((ulong) initdram & 0xff000000) {
+		volatile uint *addr1, *addr2;
+		uint i;
+
+		upmconfig (UPMA, (uint *) edo_60ns_25MHz_tbl,
+			   sizeof (edo_60ns_25MHz_tbl) / sizeof (uint));
+		memctl->memc_mptpr = 0x0200;
+		memctl->memc_mamr = 0x0ca20330;
+		memctl->memc_or2 = -CONFIG_SYS_DRAM_MAX | OR_CSNT_SAM;
+		memctl->memc_br2 = CONFIG_SYS_DRAM_BASE | BR_MS_UPMA | BR_V;
+		/*
+		 * Do 8 read accesses to DRAM
+		 */
+		addr1 = (volatile uint *) 0;
+		addr2 = (volatile uint *) 0x00400000;
+		for (i = 0; i < 8; i++)
+			in_be32(addr1);
+
+		/*
+		 * Now check whether we got 4MB or 16MB populated
+		 */
+		addr1[0] = 0x12345678;
+		addr1[1] = 0x9abcdef0;
+		addr2[0] = 0xfeedc0de;
+		addr2[1] = 0x47110815;
+		if (addr1[0] == 0xfeedc0de && addr1[1] == 0x47110815) {
+			/* only 4MB populated */
+			memctl->memc_or2 = -(CONFIG_SYS_DRAM_MAX / 4) | OR_CSNT_SAM;
+		}
+	}
+
+	return -(memctl->memc_or2 & 0xffff0000);
+}
+
+/*****************************************************************************
+ * prepare for FLASH detection
+ *****************************************************************************/
+void flash_preinit(void)
+{
+}
+
+/*****************************************************************************
+ * finalize FLASH setup
+ *****************************************************************************/
+void flash_afterinit(uint bank, ulong start, ulong size)
+{
+}
+
+/*****************************************************************************
+ * otherinits after RAM is there and we are relocated to RAM
+ * note: though this is an int function, nobody cares for the result!
+ *****************************************************************************/
+int misc_init_r (void)
+{
+	/* read 'factory' part of EEPROM */
+	extern void read_factory_r (void);
+	read_factory_r ();
+
+	return (0);
+}