Initial import of abandoned HQEMU version 2.5.2HEADmaster

1 files changed, 81 insertions, 0 deletions

diff --git a/src/roms/u-boot/board/amcc/acadia/memory.c b/src/roms/u-boot/board/amcc/acadia/memory.c
new file mode 100644
index 0000000..9673118
--- /dev/null
+++ b/src/roms/u-boot/board/amcc/acadia/memory.c
@@ -0,0 +1,81 @@
+/*
+ * (C) Copyright 2007
+ * Stefan Roese, DENX Software Engineering, sr@denx.de.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+/* define DEBUG for debugging output (obviously ;-)) */
+#if 0
+#define DEBUG
+#endif
+
+#include <common.h>
+#include <asm/processor.h>
+#include <asm/io.h>
+#include <asm/ppc4xx-gpio.h>
+
+extern void board_pll_init_f(void);
+
+static void cram_bcr_write(u32 wr_val)
+{
+	wr_val <<= 2;
+
+	/* set CRAM_CRE to 1 */
+	gpio_write_bit(CONFIG_SYS_GPIO_CRAM_CRE, 1);
+
+	/* Write BCR to CRAM on CS1 */
+	out32(wr_val + 0x00200000, 0);
+	debug("CRAM VAL: %08x for CS1 ", wr_val + 0x00200000);
+
+	/* Write BCR to CRAM on CS2 */
+	out32(wr_val + 0x02200000, 0);
+	debug("CRAM VAL: %08x for CS2\n", wr_val + 0x02200000);
+
+	sync();
+	eieio();
+
+	/* set CRAM_CRE back to 0 (normal operation) */
+	gpio_write_bit(CONFIG_SYS_GPIO_CRAM_CRE, 0);
+
+	return;
+}
+
+phys_size_t initdram(int board_type)
+{
+	int i;
+	u32 val;
+
+	/* 1. EBC need to program READY, CLK, ADV for ASync mode */
+	gpio_config(CONFIG_SYS_GPIO_CRAM_CLK, GPIO_OUT, GPIO_SEL, GPIO_OUT_0);
+	gpio_config(CONFIG_SYS_GPIO_CRAM_ADV, GPIO_OUT, GPIO_SEL, GPIO_OUT_0);
+	gpio_config(CONFIG_SYS_GPIO_CRAM_CRE, GPIO_OUT, GPIO_SEL, GPIO_OUT_0);
+	gpio_config(CONFIG_SYS_GPIO_CRAM_WAIT, GPIO_IN, GPIO_SEL, GPIO_OUT_NO_CHG);
+
+	/* 2. EBC in Async mode */
+	mtebc(PB1AP, 0x078F1EC0);
+	mtebc(PB2AP, 0x078F1EC0);
+	mtebc(PB1CR, 0x000BC000);
+	mtebc(PB2CR, 0x020BC000);
+
+	/* 3. Set CRAM in Sync mode */
+	cram_bcr_write(0x7012);		/* CRAM burst setting */
+
+	/* 4. EBC in Sync mode */
+	mtebc(PB1AP, 0x9C0201C0);
+	mtebc(PB2AP, 0x9C0201C0);
+
+	/* Set GPIO pins back to alternate function */
+	gpio_config(CONFIG_SYS_GPIO_CRAM_CLK, GPIO_OUT, GPIO_ALT1, GPIO_OUT_NO_CHG);
+	gpio_config(CONFIG_SYS_GPIO_CRAM_ADV, GPIO_OUT, GPIO_ALT1, GPIO_OUT_NO_CHG);
+
+	/* Config EBC to use RDY */
+	mfsdr(SDR0_ULTRA0, val);
+	mtsdr(SDR0_ULTRA0, val | SDR_ULTRA0_EBCRDYEN);
+
+	/* Wait a short while, since for NAND booting this is too fast */
+	for (i=0; i<200000; i++)
+		;
+
+	return (CONFIG_SYS_MBYTES_RAM << 20);
+}