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From: Sascha Hauer <s.hauer@pengutronix.de>
To: Barebox List <barebox@lists.infradead.org>
Subject: [PATCH v2 18/21] ARM: Layerscape: LS1028a: implement bootsource detection
Date: Tue,  9 Jan 2024 17:15:24 +0100	[thread overview]
Message-ID: <20240109161527.3237581-19-s.hauer@pengutronix.de> (raw)
In-Reply-To: <20240109161527.3237581-1-s.hauer@pengutronix.de>

Detecting the bootsource is just a matter of decoding the porsr1
register. Implement it.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 arch/arm/mach-layerscape/boot.c      | 40 ++++++++++++++++++++++++++++
 arch/arm/mach-layerscape/soc.c       |  1 +
 include/mach/layerscape/layerscape.h |  1 +
 3 files changed, 42 insertions(+)

diff --git a/arch/arm/mach-layerscape/boot.c b/arch/arm/mach-layerscape/boot.c
index 26a7a1434a..4d074205cc 100644
--- a/arch/arm/mach-layerscape/boot.c
+++ b/arch/arm/mach-layerscape/boot.c
@@ -3,8 +3,10 @@
 #include <common.h>
 #include <init.h>
 #include <bootsource.h>
+#include <linux/bitfield.h>
 #include <mach/layerscape/layerscape.h>
 #include <soc/fsl/immap_lsch2.h>
+#include <soc/fsl/immap_lsch3.h>
 
 enum bootsource ls1046a_bootsource_get(void)
 {
@@ -41,3 +43,41 @@ void ls1046a_bootsource_init(void)
 {
 	bootsource_set_raw(ls1046a_bootsource_get(), BOOTSOURCE_INSTANCE_UNKNOWN);
 }
+
+#define PORSR1_RCW_SRC	GENMASK(26, 23)
+
+static enum bootsource ls1028a_bootsource_get(int *instance)
+{
+	void __iomem *porsr1 = IOMEM(LSCH3_DCFG_BASE);
+	uint32_t rcw_src;
+
+	rcw_src = FIELD_GET(PORSR1_RCW_SRC, readl(porsr1));
+
+	printf("%s: 0x%08x\n", __func__, rcw_src);
+
+	switch (rcw_src) {
+	case 8:
+		*instance = 0;
+		return BOOTSOURCE_MMC;
+	case 9:
+		*instance = 1;
+		return BOOTSOURCE_MMC;
+	case 0xa:
+		return BOOTSOURCE_I2C;
+	case 0xd:
+	case 0xc:
+		return BOOTSOURCE_NAND;
+	case 0xf:
+		return BOOTSOURCE_SPI_NOR;
+	}
+
+	return BOOTSOURCE_UNKNOWN;
+}
+
+void ls1028a_bootsource_init(void)
+{
+	int instance = BOOTSOURCE_INSTANCE_UNKNOWN;
+	enum bootsource source = ls1028a_bootsource_get(&instance);
+
+	bootsource_set_raw(source, instance);
+}
diff --git a/arch/arm/mach-layerscape/soc.c b/arch/arm/mach-layerscape/soc.c
index a50aafc954..462405ea87 100644
--- a/arch/arm/mach-layerscape/soc.c
+++ b/arch/arm/mach-layerscape/soc.c
@@ -92,6 +92,7 @@ static int ls1028a_init(void)
 	if (!cpu_is_ls1028a())
 		return -EINVAL;
 
+	ls1028a_bootsource_init();
 	layerscape_register_pbl_image_handler();
 	ls1028a_setup_icids();
 
diff --git a/include/mach/layerscape/layerscape.h b/include/mach/layerscape/layerscape.h
index a9037125c8..bf4a751b92 100644
--- a/include/mach/layerscape/layerscape.h
+++ b/include/mach/layerscape/layerscape.h
@@ -54,6 +54,7 @@ struct dram_regions_info {
 };
 
 void ls1021a_bootsource_init(void);
+void ls1028a_bootsource_init(void);
 void ls1046a_bootsource_init(void);
 void layerscape_register_pbl_image_handler(void);
 void ls102xa_smmu_stream_id_init(void);
-- 
2.39.2




  parent reply	other threads:[~2024-01-09 16:17 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-01-09 16:15 [PATCH v2 00/21] Add more Layerscape LS1028a stuff Sascha Hauer
2024-01-09 16:15 ` [PATCH v2 01/21] memory: Fix reserve_sdram_region() return value Sascha Hauer
2024-01-09 16:15 ` [PATCH v2 02/21] ARM: Layerscape: consolidate initcalls into one Sascha Hauer
2024-01-09 16:15 ` [PATCH v2 03/21] ARM: Layerscape: LS1028a: reserve DDR region for TF-A Sascha Hauer
2024-01-09 16:15 ` [PATCH v2 04/21] ARM: Layerscape: icid: make readonly arrays const Sascha Hauer
2024-01-09 16:15 ` [PATCH v2 05/21] ARM: Layerscape: icid: rename functions Sascha Hauer
2024-01-09 16:15 ` [PATCH v2 06/21] ARM: Layerscape: icid: move re-usable code to separate functions Sascha Hauer
2024-01-09 16:15 ` [PATCH v2 07/21] ARM: Layerscape: icid: use of_property_write_u32_array() in of_set_iommu_prop() Sascha Hauer
2024-01-09 16:15 ` [PATCH v2 08/21] ARM: Layerscape: icid: use of_property_write_u32_array() in of_set_qportal_iommu_prop() Sascha Hauer
2024-01-09 16:15 ` [PATCH v2 09/21] ARM: Layerscape: icid: factor out setup_icid_offsets() Sascha Hauer
2024-01-09 16:15 ` [PATCH v2 10/21] immap_lsch3: Add more stuff Sascha Hauer
2024-01-09 16:15 ` [PATCH v2 11/21] ARM: Layerscape: LS1028a: fixup icids Sascha Hauer
2024-01-09 16:15 ` [PATCH v2 12/21] ARM: psci: make header self contained Sascha Hauer
2024-01-09 16:15 ` [PATCH v2 13/21] ARM: Layerscape: LS1028a: add psci node Sascha Hauer
2024-01-09 16:15 ` [PATCH v2 14/21] ARM: Layerscape: move over to MULTIARCH Sascha Hauer
2024-01-09 16:15 ` [PATCH v2 15/21] ARM: enable Layerscape boards in multi_v8_defconfig Sascha Hauer
2024-01-09 16:15 ` [PATCH v2 16/21] ARM: multi_v8_defconfig: disable CONFIG_MCI_STARTUP Sascha Hauer
2024-01-09 16:15 ` [PATCH v2 17/21] clk: layerscape: increase PLL divider array Sascha Hauer
2024-01-09 16:15 ` Sascha Hauer [this message]
2024-01-09 16:15 ` [PATCH v2 19/21] ARM: Layerscape: LS1028a: extend layerscape image filetype detection for LS1028a Sascha Hauer
2024-01-09 16:15 ` [PATCH v2 20/21] ARM: Layerscape: LS1028a: Add barebox update handler Sascha Hauer
2024-01-09 16:15 ` [PATCH v2 21/21] ARM: Layerscape: add basic support for NXP LS1028a RDB Sascha Hauer

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