Add qemu 2.4.0

Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5
Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>

1 files changed, 247 insertions, 0 deletions

diff --git a/qemu/roms/u-boot/board/lwmon5/sdram.c b/qemu/roms/u-boot/board/lwmon5/sdram.c
new file mode 100644
index 000000000..5dfbb0bc2
--- /dev/null
+++ b/qemu/roms/u-boot/board/lwmon5/sdram.c
@@ -0,0 +1,247 @@
+/*
+ * (C) Copyright 2006
+ * Sylvie Gohl,		    AMCC/IBM, gohl.sylvie@fr.ibm.com
+ * Jacqueline Pira-Ferriol, AMCC/IBM, jpira-ferriol@fr.ibm.com
+ * Thierry Roman,	    AMCC/IBM, thierry_roman@fr.ibm.com
+ * Alain Saurel,	    AMCC/IBM, alain.saurel@fr.ibm.com
+ * Robert Snyder,	    AMCC/IBM, rob.snyder@fr.ibm.com
+ *
+ * (C) Copyright 2007-2013
+ * 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/mmu.h>
+#include <asm/io.h>
+#include <asm/cache.h>
+#include <asm/ppc440.h>
+#include <watchdog.h>
+
+/*
+ * This DDR2 setup code can dynamically setup the TLB entries for the DDR2 memory
+ * region. Right now the cache should still be disabled in U-Boot because of the
+ * EMAC driver, that need it's buffer descriptor to be located in non cached
+ * memory.
+ *
+ * If at some time this restriction doesn't apply anymore, just define
+ * CONFIG_4xx_DCACHE in the board config file and this code should setup
+ * everything correctly.
+ */
+#ifdef CONFIG_4xx_DCACHE
+#define MY_TLB_WORD2_I_ENABLE	0			/* enable caching on SDRAM */
+#else
+#define MY_TLB_WORD2_I_ENABLE	TLB_WORD2_I_ENABLE	/* disable caching on SDRAM */
+#endif
+
+/*-----------------------------------------------------------------------------+
+ * Prototypes
+ *-----------------------------------------------------------------------------*/
+extern int denali_wait_for_dlllock(void);
+extern void denali_core_search_data_eye(void);
+extern void dcbz_area(u32 start_address, u32 num_bytes);
+
+static u32 is_ecc_enabled(void)
+{
+	u32 val;
+
+	mfsdram(DDR0_22, val);
+	val &= DDR0_22_CTRL_RAW_MASK;
+	if (val)
+		return 1;
+	else
+		return 0;
+}
+
+void board_add_ram_info(int use_default)
+{
+	PPC4xx_SYS_INFO board_cfg;
+	u32 val;
+
+	if (is_ecc_enabled())
+		puts(" (ECC");
+	else
+		puts(" (ECC not");
+
+	get_sys_info(&board_cfg);
+	printf(" enabled, %ld MHz", (board_cfg.freqPLB * 2) / 1000000);
+
+	mfsdram(DDR0_03, val);
+	val = DDR0_03_CASLAT_DECODE(val);
+	printf(", CL%d)", val);
+}
+
+#ifdef CONFIG_DDR_ECC
+static void wait_ddr_idle(void)
+{
+	/*
+	 * Controller idle status cannot be determined for Denali
+	 * DDR2 code. Just return here.
+	 */
+}
+
+static void program_ecc(u32 start_address,
+			u32 num_bytes,
+			u32 tlb_word2_i_value)
+{
+	u32 val;
+	u32 current_addr = start_address;
+	u32 size;
+	int bytes_remaining;
+
+	sync();
+	wait_ddr_idle();
+
+	/*
+	 * Because of 440EPx errata CHIP 11, we don't touch the last 256
+	 * bytes of SDRAM.
+	 */
+	bytes_remaining = num_bytes - CONFIG_SYS_MEM_TOP_HIDE;
+
+	/*
+	 * We have to write the ECC bytes by zeroing and flushing in smaller
+	 * steps, since the whole 256MByte takes too long for the external
+	 * watchdog.
+	 */
+	while (bytes_remaining > 0) {
+		size = min((64 << 20), bytes_remaining);
+
+		/* Write zero's to SDRAM */
+		dcbz_area(current_addr, size);
+
+		/* Write modified dcache lines back to memory */
+		clean_dcache_range(current_addr, current_addr + size);
+
+		current_addr += 64 << 20;
+		bytes_remaining -= 64 << 20;
+		WATCHDOG_RESET();
+	}
+
+	sync();
+	wait_ddr_idle();
+
+	/* Clear error status */
+	mfsdram(DDR0_00, val);
+	mtsdram(DDR0_00, val | DDR0_00_INT_ACK_ALL);
+
+	/* Set 'int_mask' parameter to functionnal value */
+	mfsdram(DDR0_01, val);
+	mtsdram(DDR0_01, ((val &~ DDR0_01_INT_MASK_MASK) | DDR0_01_INT_MASK_ALL_OFF));
+
+	sync();
+	wait_ddr_idle();
+}
+#endif
+
+/*************************************************************************
+ *
+ * initdram -- 440EPx's DDR controller is a DENALI Core
+ *
+ ************************************************************************/
+phys_size_t initdram (int board_type)
+{
+#if defined(CONFIG_SPL_BUILD) || !defined(CONFIG_LCD4_LWMON5)
+	/* CL=4 */
+	mtsdram(DDR0_02, 0x00000000);
+
+	mtsdram(DDR0_00, 0x0000190A);
+	mtsdram(DDR0_01, 0x01000000);
+	mtsdram(DDR0_03, 0x02040803); /* A suitable burst length was taken. CAS is right for our board */
+
+	mtsdram(DDR0_04, 0x0B030300);
+	mtsdram(DDR0_05, 0x02020308);
+	mtsdram(DDR0_06, 0x0003C812);
+	mtsdram(DDR0_07, 0x00090100);
+	mtsdram(DDR0_08, 0x03c80001);
+	mtsdram(DDR0_09, 0x00011D5F);
+	mtsdram(DDR0_10, 0x00000100);
+	mtsdram(DDR0_11, 0x000CC800);
+	mtsdram(DDR0_12, 0x00000003);
+	mtsdram(DDR0_14, 0x00000000);
+	mtsdram(DDR0_17, 0x1e000000);
+	mtsdram(DDR0_18, 0x1e1e1e1e);
+	mtsdram(DDR0_19, 0x1e1e1e1e);
+	mtsdram(DDR0_20, 0x0B0B0B0B);
+	mtsdram(DDR0_21, 0x0B0B0B0B);
+#ifdef CONFIG_DDR_ECC
+	mtsdram(DDR0_22, 0x00267F0B | DDR0_22_CTRL_RAW_ECC_ENABLE); /* enable ECC       */
+#else
+	mtsdram(DDR0_22, 0x00267F0B);
+#endif
+
+	mtsdram(DDR0_23, 0x01000000);
+	mtsdram(DDR0_24, 0x01010001);
+
+	mtsdram(DDR0_26, 0x2D93028A);
+	mtsdram(DDR0_27, 0x0784682B);
+
+	mtsdram(DDR0_28, 0x00000080);
+	mtsdram(DDR0_31, 0x00000000);
+	mtsdram(DDR0_42, 0x01000008);
+
+	mtsdram(DDR0_43, 0x050A0200);
+	mtsdram(DDR0_44, 0x00000005);
+	mtsdram(DDR0_02, 0x00000001); /* Activate the denali core */
+
+	denali_wait_for_dlllock();
+
+#if defined(CONFIG_DDR_DATA_EYE)
+	/* -----------------------------------------------------------+
+	 * Perform data eye search if requested.
+	 * ----------------------------------------------------------*/
+	program_tlb(0, CONFIG_SYS_SDRAM_BASE, CONFIG_SYS_MBYTES_SDRAM << 20,
+		    TLB_WORD2_I_ENABLE);
+	denali_core_search_data_eye();
+	remove_tlb(CONFIG_SYS_SDRAM_BASE, CONFIG_SYS_MBYTES_SDRAM << 20);
+#endif
+
+	/*
+	 * Program tlb entries for this size (dynamic)
+	 */
+	program_tlb(0, CONFIG_SYS_SDRAM_BASE, CONFIG_SYS_MBYTES_SDRAM << 20,
+		    MY_TLB_WORD2_I_ENABLE);
+
+#if defined(CONFIG_DDR_ECC)
+#if defined(CONFIG_4xx_DCACHE)
+	/*
+	 * If ECC is enabled, initialize the parity bits.
+	 */
+	program_ecc(0, CONFIG_SYS_MBYTES_SDRAM << 20, 0);
+#else /* CONFIG_4xx_DCACHE */
+	/*
+	 * Setup 2nd TLB with same physical address but different virtual address
+	 * with cache enabled. This is done for fast ECC generation.
+	 */
+	program_tlb(0, CONFIG_SYS_DDR_CACHED_ADDR, CONFIG_SYS_MBYTES_SDRAM << 20, 0);
+
+	/*
+	 * If ECC is enabled, initialize the parity bits.
+	 */
+	program_ecc(CONFIG_SYS_DDR_CACHED_ADDR, CONFIG_SYS_MBYTES_SDRAM << 20, 0);
+
+	/*
+	 * Now after initialization (auto-calibration and ECC generation)
+	 * remove the TLB entries with caches enabled and program again with
+	 * desired cache functionality
+	 */
+	remove_tlb(CONFIG_SYS_DDR_CACHED_ADDR, CONFIG_SYS_MBYTES_SDRAM << 20);
+#endif /* CONFIG_4xx_DCACHE */
+#endif /* CONFIG_DDR_ECC */
+
+	/*
+	 * Clear possible errors resulting from data-eye-search.
+	 * If not done, then we could get an interrupt later on when
+	 * exceptions are enabled.
+	 */
+	set_mcsr(get_mcsr());
+#endif /* CONFIG_SPL_BUILD */
+
+	return (CONFIG_SYS_MBYTES_SDRAM << 20);
+}