1 files changed, 88 insertions, 0 deletions
diff --git a/board/freescale/common/mpc85xx_sleep.c b/board/freescale/common/mpc85xx_sleep.c
new file mode 100644
index 0000000000..f924e7f482
--- /dev/null
+++ b/board/freescale/common/mpc85xx_sleep.c
@@ -0,0 +1,88 @@
+/*
+ * Copyright 2014 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/immap_85xx.h>
+#include "sleep.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+void __weak board_mem_sleep_setup(void)
+{
+}
+
+void __weak board_sleep_prepare(void)
+{
+}
+
+bool is_warm_boot(void)
+{
+	struct ccsr_gur __iomem *gur = (void *)CONFIG_SYS_MPC85xx_GUTS_ADDR;
+
+	if (in_be32(&gur->scrtsr[0]) & DCFG_CCSR_CRSTSR_WDRFR)
+		return 1;
+
+	return 0;
+}
+
+void fsl_dp_disable_console(void)
+{
+	gd->flags |= GD_FLG_SILENT | GD_FLG_DISABLE_CONSOLE;
+}
+
+/*
+ * When wakeup from deep sleep, the first 128 bytes space
+ * will be used to do DDR training which corrupts the data
+ * in there. This function will restore them.
+ */
+static void dp_ddr_restore(void)
+{
+	volatile u64 *src, *dst;
+	int i;
+	struct ccsr_scfg __iomem *scfg = (void *)CONFIG_SYS_MPC85xx_SCFG;
+
+	/* get the address of ddr date from SPARECR3 */
+	src = (u64 *)in_be32(&scfg->sparecr[2]);
+	dst = (u64 *)CONFIG_SYS_SDRAM_BASE;
+
+	for (i = 0; i < DDR_BUFF_LEN / 8; i++)
+		*dst++ = *src++;
+
+	flush_dcache();
+}
+
+static void dp_resume_prepare(void)
+{
+	dp_ddr_restore();
+
+	board_sleep_prepare();
+
+	l2cache_init();
+#if defined(CONFIG_RAMBOOT_PBL)
+	disable_cpc_sram();
+#endif
+	enable_cpc();
+}
+
+int fsl_dp_resume(void)
+{
+	u32 start_addr;
+	void (*kernel_resume)(void);
+	struct ccsr_scfg __iomem *scfg = (void *)CONFIG_SYS_MPC85xx_SCFG;
+
+	if (!is_warm_boot())
+		return 0;
+
+	dp_resume_prepare();
+
+	/* Get the entry address and jump to kernel */
+	start_addr = in_be32(&scfg->sparecr[1]);
+	debug("Entry address is 0x%08x\n", start_addr);
+	kernel_resume = (void (*)(void))start_addr;
+	kernel_resume();
+
+	return 0;
+}