1 // SPDX-License-Identifier: GPL-2.0+
3 * Copyright 2014 Freescale Semiconductor, Inc.
9 #ifndef CONFIG_ARMV7_NONSEC
10 #error " Deep sleep needs non-secure mode support. "
12 #include <asm/secure.h>
14 #include <asm/armv7.h>
16 #if defined(CONFIG_ARCH_LS1021A)
17 #include <asm/arch/immap_ls102xa.h>
25 DECLARE_GLOBAL_DATA_PTR;
27 void __weak board_mem_sleep_setup(void)
31 void __weak board_sleep_prepare(void)
35 bool is_warm_boot(void)
37 struct ccsr_gur __iomem *gur = (void *)CONFIG_SYS_FSL_GUTS_ADDR;
39 if (in_be32(&gur->crstsr) & DCFG_CCSR_CRSTSR_WDRFR)
45 void fsl_dp_disable_console(void)
47 gd->flags |= GD_FLG_SILENT | GD_FLG_DISABLE_CONSOLE;
51 * When wakeup from deep sleep, the first 128 bytes space
52 * will be used to do DDR training which corrupts the data
53 * in there. This function will restore them.
55 static void dp_ddr_restore(void)
59 struct ccsr_scfg __iomem *scfg = (void *)CONFIG_SYS_FSL_SCFG_ADDR;
61 /* get the address of ddr date from SPARECR3 */
62 src = (u64 *)in_le32(&scfg->sparecr[2]);
63 dst = (u64 *)CONFIG_SYS_SDRAM_BASE;
65 for (i = 0; i < DDR_BUFF_LEN / 8; i++)
69 #if defined(CONFIG_ARMV7_PSCI) && defined(CONFIG_ARCH_LS1021A)
70 void ls1_psci_resume_fixup(void)
73 struct ccsr_scfg __iomem *scfg = (void *)CONFIG_SYS_FSL_SCFG_ADDR;
76 void *qixis_base = (void *)QIXIS_BASE;
78 /* Pull on PCIe RST# */
79 out_8(qixis_base + QIXIS_RST_FORCE_3, 0);
81 /* disable deep sleep signals in FPGA */
82 tmp = in_8(qixis_base + QIXIS_PWR_CTL2);
83 tmp &= ~QIXIS_PWR_CTL2_PCTL;
84 out_8(qixis_base + QIXIS_PWR_CTL2, tmp);
87 /* Disable wakeup interrupt during deep sleep */
88 out_be32(&scfg->pmcintecr, 0);
89 /* Clear PMC interrupt status */
90 out_be32(&scfg->pmcintsr, 0xffffffff);
92 /* Disable Warm Device Reset */
93 tmp = in_be32(&scfg->dpslpcr);
94 tmp &= ~SCFG_DPSLPCR_WDRR_EN;
95 out_be32(&scfg->dpslpcr, tmp);
99 static void dp_resume_prepare(void)
102 board_sleep_prepare();
107 #if defined(CONFIG_ARMV7_PSCI) && defined(CONFIG_ARCH_LS1021A)
108 ls1_psci_resume_fixup();
112 int fsl_dp_resume(void)
115 void (*kernel_resume)(void);
116 struct ccsr_scfg __iomem *scfg = (void *)CONFIG_SYS_FSL_SCFG_ADDR;
123 /* Get the entry address and jump to kernel */
124 start_addr = in_le32(&scfg->sparecr[3]);
125 debug("Entry address is 0x%08x\n", start_addr);
126 kernel_resume = (void (*)(void))start_addr;
127 secure_ram_addr(_do_nonsec_entry)(kernel_resume, 0, 0, 0);