Adding upstream version 2.8.0+dfsg.upstream/2.8.0+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 229 insertions, 0 deletions

diff --git a/plat/nxp/soc-lx2160a/aarch64/lx2160a_warm_rst.S b/plat/nxp/soc-lx2160a/aarch64/lx2160a_warm_rst.S
new file mode 100644
index 0000000..9dec3f2
--- /dev/null
+++ b/plat/nxp/soc-lx2160a/aarch64/lx2160a_warm_rst.S
@@ -0,0 +1,229 @@
+/*
+ * Copyright 2020 NXP
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ */
+
+.section .text, "ax"
+
+#include <asm_macros.S>
+
+#ifndef NXP_COINED_BB
+#include <flash_info.h>
+#include <fspi.h>
+#endif
+#include <regs.h>
+#ifdef NXP_COINED_BB
+#include <snvs.h>
+#endif
+
+#include <plat_warm_rst.h>
+#include <platform_def.h>
+
+#define SDRAM_CFG	0x110
+#define SDRAM_CFG_2	0x114
+#define SDRAM_MD_CNTL	0x120
+#define SDRAM_INTERVAL	0x124
+#define TIMING_CFG_10	0x258
+#define DEBUG_2		0xF04
+#define DEBUG_26	0xF64
+#define DDR_DSR2	0xB24
+
+#define DDR_CNTRLR_2	0x2
+#define COUNT_100	1000
+
+	.globl	_soc_sys_warm_reset
+	.align 12
+
+func _soc_sys_warm_reset
+	mov  x3, xzr
+	b    touch_line0
+start_line0:
+	mov  x3, #1
+	mov  x2, #NUM_OF_DDRC
+	ldr x1, =NXP_DDR_ADDR
+1:
+	ldr w0, [x1, #SDRAM_CFG]
+	orr w0, w0, #SDRAM_CFG_MEM_HLT
+	str w0, [x1, #SDRAM_CFG]
+2:
+	ldr w0, [x1, #DEBUG_2]
+	and w0, w0, #DDR_DBG_2_MEM_IDLE
+	cbz w0, 2b
+
+	ldr w0, [x1, #DEBUG_26]
+	orr w0, w0, #DDR_DEBUG_26_BIT_12
+	orr w0, w0, #DDR_DEBUG_26_BIT_13
+	orr w0, w0, #DDR_DEBUG_26_BIT_14
+touch_line0:
+	cbz x3, touch_line1
+
+	orr w0, w0, #DDR_DEBUG_26_BIT_15
+	orr w0, w0, #DDR_DEBUG_26_BIT_16
+	str w0, [x1, #DEBUG_26]
+
+	ldr w0, [x1, #SDRAM_CFG_2]
+	orr w0, w0, #SDRAM_CFG2_FRC_SR
+	str w0,  [x1, #SDRAM_CFG_2]
+
+3:
+	ldr w0, [x1, #DDR_DSR2]
+	orr w0, w0, #DDR_DSR_2_PHY_INIT_CMPLT
+	str w0, [x1, #DDR_DSR2]
+	ldr w0, [x1, #DDR_DSR2]
+        and w0, w0, #DDR_DSR_2_PHY_INIT_CMPLT
+	cbnz w0, 3b
+
+	ldr w0, [x1, #SDRAM_INTERVAL]
+	and w0, w0, #SDRAM_INTERVAL_REFINT_CLEAR
+	str w0, [x1, #SDRAM_INTERVAL]
+touch_line1:
+	cbz x3, touch_line2
+
+	ldr w0, [x1, #SDRAM_MD_CNTL]
+	orr w0, w0, #MD_CNTL_CKE(1)
+	orr w0, w0, #MD_CNTL_MD_EN
+	str w0, [x1, #SDRAM_MD_CNTL]
+
+	ldr w0, [x1, #TIMING_CFG_10]
+	orr w0, w0, #DDR_TIMING_CFG_10_T_STAB
+	str w0, [x1, #TIMING_CFG_10]
+
+	ldr w0, [x1, #SDRAM_CFG_2]
+	and w0, w0, #SDRAM_CFG2_FRC_SR_CLEAR
+	str w0, [x1, #SDRAM_CFG_2]
+
+4:
+	ldr w0, [x1, #DDR_DSR2]
+        and w0, w0, #DDR_DSR_2_PHY_INIT_CMPLT
+        cbz w0, 4b
+	nop
+touch_line2:
+	cbz x3, touch_line3
+
+	ldr w0, [x1, #DEBUG_26]
+	orr w0, w0, #DDR_DEBUG_26_BIT_25
+	and w0, w0, #DDR_DEBUG_26_BIT_24_CLEAR
+	str w0, [x1, #DEBUG_26]
+
+	cmp x2, #DDR_CNTRLR_2
+	b.ne 5f
+	ldr x1, =NXP_DDR2_ADDR
+	mov x2, xzr
+	b 1b
+
+5:
+	mov x5, xzr
+6:
+	add x5, x5, #1
+	cmp x5, #COUNT_100
+	b.ne 6b
+	nop
+touch_line3:
+	cbz x3, touch_line4
+#ifdef NXP_COINED_BB
+        ldr  x1, =NXP_SNVS_ADDR
+        ldr  w0, [x1, #NXP_APP_DATA_LP_GPR_OFFSET]
+
+	/* On Warm Boot is enabled, then zeroth bit
+	 * of SNVS LP GPR register 0 will used
+	 * to save the status of warm-reset as a cause.
+	 */
+        orr  w0, w0, #(1 << NXP_LPGPR_ZEROTH_BIT)
+
+        /* write back */
+        str  w0, [x1, #NXP_APP_DATA_LP_GPR_OFFSET]
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+touch_line4:
+	cbz x3, touch_line6
+#elif !(ERLY_WRM_RST_FLG_FLSH_UPDT)
+        ldr  x1, =NXP_FLEXSPI_ADDR
+        ldr  w0, [x1, #FSPI_IPCMD]
+        orr  w0, w0, #FSPI_IPCMD_TRG_MASK
+        str  w0, [x1, #FSPI_IPCMD]
+7:
+        ldr  w0, [x1, #FSPI_INTR]
+        and  w0, w0, #FSPI_INTR_IPCMDDONE_MASK
+        cmp  w0, #0
+        b.eq 7b
+
+        ldr  w0, [x1, #FSPI_IPTXFCR]
+        orr  w0, w0, #FSPI_IPTXFCR_CLR
+        str  w0, [x1, #FSPI_IPTXFCR]
+
+        ldr  w0, [x1, #FSPI_INTR]
+        orr  w0, w0, #FSPI_INTR_IPCMDDONE_MASK
+        str  w0, [x1, #FSPI_INTR]
+	nop
+touch_line4:
+        cbz x3, touch_line5
+        /* flexspi driver has an api
+         * is_flash_busy().
+         * Impelementation of the api will not
+         * fit-in in 1 cache line.
+         * instead a nop-cycles are introduced to
+         * simulate the wait time for flash write
+         * completion.
+         *
+         * Note: This wait time varies from flash to flash.
+         */
+
+        mov    x0, #FLASH_WR_COMP_WAIT_BY_NOP_COUNT
+8:
+        sub x0, x0, #1
+        nop
+        cmp x0, #0
+        b.ne    8b
+        nop
+        nop
+        nop
+        nop
+        nop
+        nop
+        nop
+        nop
+        nop
+touch_line5:
+        cbz x3, touch_line6
+#endif
+        ldr  x2, =NXP_RST_ADDR
+	/* clear the RST_REQ_MSK and SW_RST_REQ */
+	mov  w0, #0x00000000
+	str  w0, [x2, #RSTCNTL_OFFSET]
+
+	/* initiate the sw reset request */
+	mov  w0, #SW_RST_REQ_INIT
+        str  w0, [x2, #RSTCNTL_OFFSET]
+
+        /* In case this address range is mapped as cacheable,
+         * flush the write out of the dcaches.
+         */
+        add  x2, x2, #RSTCNTL_OFFSET
+        dc   cvac, x2
+        dsb  st
+        isb
+
+        /* Function does not return */
+        b  .
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+	nop
+touch_line6:
+	cbz x3, start_line0
+
+endfunc _soc_sys_warm_reset