[PATCH v2 09/12] ARM: Layerscape: TQMLS1046a: Switch to TF-A support

[Sascha Hauer]

Now that we can start TF-A on LS1046a based boards switch the TQMLS1046a
over to use this rather than deprecated PPA.

Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
---
 arch/arm/boards/tqmls1046a/board.c    |  7 ++++---
 arch/arm/boards/tqmls1046a/lowlevel.c | 32 ++++++++++++++++++++++++++++++--
 arch/arm/boards/tqmls1046a/start.S    | 14 +++++++++++++-
 3 files changed, 47 insertions(+), 6 deletions(-)

diff --git a/arch/arm/boards/tqmls1046a/board.c b/arch/arm/boards/tqmls1046a/board.c
index d30cd37747..c8a7f06d76 100644
--- a/arch/arm/boards/tqmls1046a/board.c
+++ b/arch/arm/boards/tqmls1046a/board.c
@@ -15,6 +15,7 @@
 
 static void ls1046a_add_memory(void)
 {
+	struct resource *res;
 	u32 cs0_bnds;
 	u64 memsize, lower, upper;
 	int ret;
@@ -41,9 +42,9 @@ static void ls1046a_add_memory(void)
 		arm_add_mem_device("ram1", 0x880000000, upper);
 	}
 
-	ret = ls1046a_ppa_init(0x100000000 - SZ_64M, SZ_64M);
-	if (ret)
-		pr_err("Failed to initialize PPA firmware: %s\n", strerror(-ret));
+	res = reserve_sdram_region("tfa", 0xfbe00000, 0x4200000);
+
+	of_register_fixup(of_fixup_reserved_memory, res);
 }
 
 static int tqmls1046a_postcore_init(void)
diff --git a/arch/arm/boards/tqmls1046a/lowlevel.c b/arch/arm/boards/tqmls1046a/lowlevel.c
index 5ccafb2d77..e139fe19a1 100644
--- a/arch/arm/boards/tqmls1046a/lowlevel.c
+++ b/arch/arm/boards/tqmls1046a/lowlevel.c
@@ -300,15 +300,41 @@ static int tqmls1046a_get_variant(void)
 	return variant;
 }
 
+static struct dram_regions_info dram_info_2g = {
+	.num_dram_regions = 1,
+	.total_dram_size = SZ_2G,
+	.region = {
+		{
+			.addr = SZ_2G,
+			.size = SZ_2G,
+		},
+	},
+};
+
+static struct dram_regions_info dram_info_8g = {
+	.num_dram_regions = 2,
+	.total_dram_size = SZ_8G,
+	.region = {
+		{
+			.addr = SZ_2G,
+			.size = SZ_2G,
+		}, {
+			.addr = SZ_32G + SZ_2G,
+			.size = SZ_4G + SZ_2G,
+		},
+	},
+};
+
 extern char __dtb_z_fsl_ls1046a_tqmls1046a_mbls10xxa_start[];
 
 static noinline __noreturn void tqmls1046a_r_entry(bool is_8g)
 {
 	unsigned long membase = LS1046A_DDR_SDRAM_BASE;
 	int board_variant = 0;
+	struct dram_regions_info *dram_info;
 
 	if (get_pc() >= membase)
-		barebox_arm_entry(membase, 0x80000000 - SZ_64M,
+		barebox_arm_entry(membase, 0x80000000 - SZ_128M,
 				  __dtb_z_fsl_ls1046a_tqmls1046a_mbls10xxa_start);
 
 	arm_cpu_lowlevel_init();
@@ -321,17 +347,19 @@ static noinline __noreturn void tqmls1046a_r_entry(bool is_8g)
 
 	if (is_8g) {
 		board_variant = tqmls1046a_get_variant();
+		dram_info = &dram_info_8g;
 		if (board_variant == TQ_VARIANT_TQMLS1046A_CA)
 			fsl_ddr_set_memctl_regs(&tqmls1046a_ddrc_8g_ca[0], 0, false);
 		else
 			fsl_ddr_set_memctl_regs(&tqmls1046a_ddrc_8g[0], 0, false);
 	} else {
+		dram_info = &dram_info_2g;
 		fsl_ddr_set_memctl_regs(&tqmls1046a_ddrc[0], 0, false);
 	}
 
 	ls1046a_errata_post_ddr();
 
-	ls1046a_xload_start_image(NULL);
+	ls1046a_xload_start_image(dram_info);
 
 	pr_err("Booting failed\n");
 
diff --git a/arch/arm/boards/tqmls1046a/start.S b/arch/arm/boards/tqmls1046a/start.S
index 84c4626880..c812a35768 100644
--- a/arch/arm/boards/tqmls1046a/start.S
+++ b/arch/arm/boards/tqmls1046a/start.S
@@ -1,8 +1,13 @@
 /* SPDX-License-Identifier: GPL-2.0-or-later */
 #include <linux/linkage.h>
 #include <asm/barebox-arm64.h>
+#include <asm/assembler64.h>
 
-#define STACK_TOP 0x10020000
+/*
+ * OCRAM is occupied by TF-A, so in EL2 and EL1 use a temporary stack in SDRAM
+ */
+#define STACK_TOP		0x10020000
+#define STACK_TOP_TMP_SDRAM	0x90000000
 
 ENTRY_PROC(start_tqmls1046a)
 	mov x3, #STACK_TOP
@@ -11,7 +16,14 @@ ENTRY_PROC(start_tqmls1046a)
 ENTRY_PROC_END(start_tqmls1046a)
 
 ENTRY_PROC(start_tqmls1046a_8g)
+	switch_el x3, 3f, 2f, 1f
+3:
 	mov x3, #STACK_TOP
 	mov sp, x3
 	b tqmls1046a_8g_entry
+2:
+1:
+	mov x3, STACK_TOP_TMP_SDRAM
+	mov sp, x3
+	b tqmls1046a_8g_entry
 ENTRY_PROC_END(start_tqmls1046a_8g)

-- 
2.39.5