From: Michael Walle <michael@walle.cc>
Date: Tue, 23 Aug 2022 09:30:15 +0000 (+0200)
Subject: board: sl28: implement additional bootsources
X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=67b5dab2637196cac82329ccc2ebf2bd95ca26e2;p=u-boot.git

board: sl28: implement additional bootsources

The board is able to boot from the following source:
 - user-updateble SPI flash
 - write-protected part of the same SPI flash
 - eMMC
 - SD card

Implement the needed function hooks to support all of these boot
sources.

Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
---

diff --git a/board/kontron/sl28/common.c b/board/kontron/sl28/common.c
index 33c6843c3f..331de29bae 100644
--- a/board/kontron/sl28/common.c
+++ b/board/kontron/sl28/common.c
@@ -2,6 +2,9 @@
 
 #include <common.h>
 #include <asm/global_data.h>
+#include <asm/io.h>
+
+#include "sl28.h"
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -9,3 +12,22 @@ u32 get_lpuart_clk(void)
 {
 	return gd->bus_clk / CONFIG_SYS_FSL_LPUART_CLK_DIV;
 }
+
+enum boot_source sl28_boot_source(void)
+{
+	u32 rcw_src = in_le32(DCFG_BASE + DCFG_PORSR1) & DCFG_PORSR1_RCW_SRC;
+
+	switch (rcw_src) {
+	case DCFG_PORSR1_RCW_SRC_SDHC1:
+		return BOOT_SOURCE_SDHC;
+	case DCFG_PORSR1_RCW_SRC_SDHC2:
+		return BOOT_SOURCE_MMC;
+	case DCFG_PORSR1_RCW_SRC_I2C:
+		return BOOT_SOURCE_I2C;
+	case DCFG_PORSR1_RCW_SRC_FSPI_NOR:
+		return BOOT_SOURCE_SPI;
+	default:
+		debug("unknown bootsource (%08x)\n", rcw_src);
+		return BOOT_SOURCE_UNKNOWN;
+	}
+}
diff --git a/board/kontron/sl28/sl28.c b/board/kontron/sl28/sl28.c
index 32e9694b77..54719cc01c 100644
--- a/board/kontron/sl28/sl28.c
+++ b/board/kontron/sl28/sl28.c
@@ -24,6 +24,8 @@
 #include <fdtdec.h>
 #include <miiphy.h>
 
+#include "sl28.h"
+
 DECLARE_GLOBAL_DATA_PTR;
 
 #if CONFIG_IS_ENABLED(EFI_HAVE_CAPSULE_SUPPORT)
@@ -60,6 +62,27 @@ int board_eth_init(struct bd_info *bis)
 	return pci_eth_init(bis);
 }
 
+enum env_location env_get_location(enum env_operation op, int prio)
+{
+	enum boot_source src = sl28_boot_source();
+
+	if (prio)
+		return ENVL_UNKNOWN;
+
+	if (!CONFIG_IS_ENABLED(ENV_IS_IN_SPI_FLASH))
+		return ENVL_NOWHERE;
+
+	/* write and erase always operate on the environment */
+	if (op == ENVOP_SAVE || op == ENVOP_ERASE)
+		return ENVL_SPI_FLASH;
+
+	/* failsafe boot will always use the compiled-in default environment */
+	if (src == BOOT_SOURCE_SPI)
+		return ENVL_NOWHERE;
+
+	return ENVL_SPI_FLASH;
+}
+
 static int __sl28cpld_read(uint reg)
 {
 	struct udevice *dev;
diff --git a/board/kontron/sl28/sl28.h b/board/kontron/sl28/sl28.h
new file mode 100644
index 0000000000..7f0105049c
--- /dev/null
+++ b/board/kontron/sl28/sl28.h
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+
+#ifndef __SL28_H
+#define __SL28_H
+
+enum boot_source {
+	BOOT_SOURCE_UNKNOWN,
+	BOOT_SOURCE_SDHC,
+	BOOT_SOURCE_MMC,
+	BOOT_SOURCE_I2C,
+	BOOT_SOURCE_SPI,
+};
+
+enum boot_source sl28_boot_source(void);
+
+#endif
diff --git a/board/kontron/sl28/spl.c b/board/kontron/sl28/spl.c
index 0e6ad5f37e..b1fefc22b2 100644
--- a/board/kontron/sl28/spl.c
+++ b/board/kontron/sl28/spl.c
@@ -5,6 +5,9 @@
 #include <asm/spl.h>
 #include <asm/arch-fsl-layerscape/fsl_serdes.h>
 #include <asm/arch-fsl-layerscape/soc.h>
+#include <spi_flash.h>
+
+#include "sl28.h"
 
 #define DCFG_RCWSR25 0x160
 #define GPINFO_HW_VARIANT_MASK 0xff
@@ -58,7 +61,40 @@ int board_fit_config_name_match(const char *name)
 
 void board_boot_order(u32 *spl_boot_list)
 {
-	spl_boot_list[0] = BOOT_DEVICE_SPI;
+	enum boot_source src = sl28_boot_source();
+
+	switch (src) {
+	case BOOT_SOURCE_SDHC:
+		spl_boot_list[0] = BOOT_DEVICE_MMC2;
+		break;
+	case BOOT_SOURCE_SPI:
+	case BOOT_SOURCE_I2C:
+		spl_boot_list[0] = BOOT_DEVICE_SPI;
+		break;
+	case BOOT_SOURCE_MMC:
+		spl_boot_list[0] = BOOT_DEVICE_MMC1;
+		break;
+	default:
+		panic("unexpected bootsource (%d)\n", src);
+		break;
+	}
+}
+
+unsigned int spl_spi_get_uboot_offs(struct spi_flash *flash)
+{
+	enum boot_source src = sl28_boot_source();
+
+	switch (src) {
+	case BOOT_SOURCE_SPI:
+		return 0x000000;
+	case BOOT_SOURCE_I2C:
+		return 0x230000;
+	default:
+		panic("unexpected bootsource (%d)\n", src);
+		break;
+	}
+}
+
 }
 
 int board_early_init_f(void)
diff --git a/configs/kontron_sl28_defconfig b/configs/kontron_sl28_defconfig
index b0b5fb11ca..4d50c681f9 100644
--- a/configs/kontron_sl28_defconfig
+++ b/configs/kontron_sl28_defconfig
@@ -12,6 +12,7 @@ CONFIG_ENV_SECT_SIZE=0x10000
 CONFIG_DEFAULT_DEVICE_TREE="fsl-ls1028a-kontron-sl28"
 CONFIG_SPL_TEXT_BASE=0x18010000
 CONFIG_SYS_FSL_SDHC_CLK_DIV=1
+CONFIG_SPL_MMC=y
 CONFIG_SPL_SERIAL=y
 CONFIG_SPL_SIZE_LIMIT=0x20000
 CONFIG_SPL_SIZE_LIMIT_PROVIDE_STACK=0x0
@@ -46,9 +47,11 @@ CONFIG_SPL_BOARD_INIT=y
 # CONFIG_SPL_SHARES_INIT_SP_ADDR is not set
 CONFIG_SPL_STACK=0x18009ff0
 CONFIG_SYS_SPL_MALLOC=y
+CONFIG_SPL_SEPARATE_BSS=y
+CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_USE_SECTOR=y
+CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR=0x900
 CONFIG_SPL_MPC8XXX_INIT_DDR=y
 CONFIG_SPL_SPI_LOAD=y
-CONFIG_SYS_SPI_U_BOOT_OFFS=0x230000
 CONFIG_SYS_CBSIZE=256
 CONFIG_SYS_PBSIZE=276
 CONFIG_SYS_BOOTM_LEN=0x800000