fsl/sleep: updated the deep sleep framework for QorIQ platforms
With the introducing of generic board and ARM-based cores, current
deep sleep framework doesn't work anymore.
This patch will convert the current framework to adapt this change.
Basically it does:
1. Converts all the Freescale's DDR driver to support deep sleep.
2. Added basic framework support for ARM-based and PPC-based
cores separately.
Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
diff --git a/board/freescale/common/arm_sleep.c b/board/freescale/common/arm_sleep.c
new file mode 100644
index 0000000..8edf878
--- /dev/null
+++ b/board/freescale/common/arm_sleep.c
@@ -0,0 +1,95 @@
+/*
+ * Copyright 2014 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#if !defined(CONFIG_ARMV7_NONSEC) || !defined(CONFIG_ARMV7_VIRT)
+#error " Deep sleep needs non-secure mode support. "
+#else
+#include <asm/secure.h>
+#endif
+#include <asm/armv7.h>
+#include <asm/cache.h>
+
+#if defined(CONFIG_LS102XA)
+#include <asm/arch/immap_ls102xa.h>
+#endif
+
+#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_FSL_GUTS_ADDR;
+
+ if (in_be32(&gur->crstsr) & 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)
+{
+ u64 *src, *dst;
+ int i;
+ struct ccsr_scfg __iomem *scfg = (void *)CONFIG_SYS_FSL_SCFG_ADDR;
+
+ /* get the address of ddr date from SPARECR3 */
+ src = (u64 *)in_le32(&scfg->sparecr[2]);
+ dst = (u64 *)CONFIG_SYS_SDRAM_BASE;
+
+ for (i = 0; i < DDR_BUFF_LEN / 8; i++)
+ *dst++ = *src++;
+
+ flush_dcache_all();
+}
+
+static void dp_resume_prepare(void)
+{
+ dp_ddr_restore();
+ board_sleep_prepare();
+ armv7_init_nonsec();
+ cleanup_before_linux();
+}
+
+int fsl_dp_resume(void)
+{
+ u32 start_addr;
+ void (*kernel_resume)(void);
+ struct ccsr_scfg __iomem *scfg = (void *)CONFIG_SYS_FSL_SCFG_ADDR;
+
+ if (!is_warm_boot())
+ return 0;
+
+ dp_resume_prepare();
+
+ /* Get the entry address and jump to kernel */
+ start_addr = in_le32(&scfg->sparecr[1]);
+ debug("Entry address is 0x%08x\n", start_addr);
+ kernel_resume = (void (*)(void))start_addr;
+ secure_ram_addr(_do_nonsec_entry)(kernel_resume, 0, 0, 0);
+
+ return 0;
+}