[U-Boot] [PATCH v2 1/8] x86: Add new slimbootloader CPU type

Park, Aiden aiden.park at intel.com
Tue Jun 25 23:15:36 UTC 2019


- Added CONFIG_SYS_SLIMBOOTLOADER to enable slimbootloader CPU type
- Added new arch/x86/cpu/slimbootloader directory with minimum codes
- Get hob_list pointer from Slim Bootloader

Signed-off-by: Aiden Park <aiden.park at intel.com>
---
 arch/x86/Kconfig                              |  1 +
 arch/x86/cpu/Makefile                         |  1 +
 arch/x86/cpu/slimbootloader/Kconfig           | 23 ++++++++++
 arch/x86/cpu/slimbootloader/Makefile          |  5 +++
 arch/x86/cpu/slimbootloader/car.S             | 43 +++++++++++++++++++
 arch/x86/cpu/slimbootloader/slimbootloader.c  | 21 +++++++++
 .../asm/arch-slimbootloader/slimbootloader.h  | 11 +++++
 arch/x86/include/asm/global_data.h            |  2 +-
 arch/x86/lib/asm-offsets.c                    |  2 +-
 9 files changed, 107 insertions(+), 2 deletions(-)
 create mode 100644 arch/x86/cpu/slimbootloader/Kconfig
 create mode 100644 arch/x86/cpu/slimbootloader/Makefile
 create mode 100644 arch/x86/cpu/slimbootloader/car.S
 create mode 100644 arch/x86/cpu/slimbootloader/slimbootloader.c
 create mode 100644 arch/x86/include/asm/arch-slimbootloader/slimbootloader.h

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 70f939869a..1612246dfc 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -116,6 +116,7 @@ source "arch/x86/cpu/qemu/Kconfig"
 source "arch/x86/cpu/quark/Kconfig"
 source "arch/x86/cpu/queensbay/Kconfig"
 source "arch/x86/cpu/tangier/Kconfig"
+source "arch/x86/cpu/slimbootloader/Kconfig"
 
 # architecture-specific options below
 
diff --git a/arch/x86/cpu/Makefile b/arch/x86/cpu/Makefile
index 85fd5e616e..a5c0113fa4 100644
--- a/arch/x86/cpu/Makefile
+++ b/arch/x86/cpu/Makefile
@@ -48,6 +48,7 @@ obj-$(CONFIG_NORTHBRIDGE_INTEL_IVYBRIDGE) += ivybridge/
 obj-$(CONFIG_INTEL_QUARK) += quark/
 obj-$(CONFIG_INTEL_QUEENSBAY) += queensbay/
 obj-$(CONFIG_INTEL_TANGIER) += tangier/
+obj-$(CONFIG_SYS_SLIMBOOTLOADER) += slimbootloader/
 obj-$(CONFIG_APIC) += lapic.o ioapic.o
 obj-y += irq.o
 ifndef CONFIG_$(SPL_)X86_64
diff --git a/arch/x86/cpu/slimbootloader/Kconfig b/arch/x86/cpu/slimbootloader/Kconfig
new file mode 100644
index 0000000000..e7513afd5b
--- /dev/null
+++ b/arch/x86/cpu/slimbootloader/Kconfig
@@ -0,0 +1,23 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright (C) 2019 Intel Corporation <www.intel.com>
+
+if TARGET_SLIMBOOTLOADER
+
+config SYS_SLIMBOOTLOADER
+	bool
+	default y
+	imply SYS_NS16550
+	imply AHCI_PCI
+	imply SCSI
+	imply SCSI_AHCI
+	imply MMC
+	imply MMC_PCI
+	imply MMC_SDHCI
+	imply MMC_SDHCI_SDMA
+	imply USB
+	imply USB_EHCI_HCD
+	imply USB_XHCI_HCD
+	imply USB_STORAGE
+
+endif
diff --git a/arch/x86/cpu/slimbootloader/Makefile b/arch/x86/cpu/slimbootloader/Makefile
new file mode 100644
index 0000000000..627a721e8c
--- /dev/null
+++ b/arch/x86/cpu/slimbootloader/Makefile
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Copyright (C) 2019 Intel Corporation <www.intel.com>
+
+obj-y += car.o slimbootloader.o
diff --git a/arch/x86/cpu/slimbootloader/car.S b/arch/x86/cpu/slimbootloader/car.S
new file mode 100644
index 0000000000..63c5c28b33
--- /dev/null
+++ b/arch/x86/cpu/slimbootloader/car.S
@@ -0,0 +1,43 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2019 Intel Corporation <www.intel.com>
+ */
+
+#include <generated/asm-offsets.h>
+
+.section .text
+
+.globl slimbootloader_start
+slimbootloader_start:
+	/* Get hob pointer parameter from previous stage's stack */
+	mov	0x4(%esp), %esi
+
+	/* Set up global data */
+	mov	%esp, %eax
+	call	board_init_f_alloc_reserve
+	mov	%eax, %esp
+	call	board_init_f_init_reserve
+
+#ifdef CONFIG_DEBUG_UART
+	call	debug_uart_init
+#endif
+
+	/* Get address of global_data */
+	mov	%fs:0, %edx
+	movl	%esi, GD_HOB_LIST(%edx)
+
+	/* Enter u-boot with 0 bootflag */
+	xorl	%eax, %eax
+	call	board_init_f
+
+.globl car_init
+car_init:
+	/*
+	 * CAR init/teardown and memory init have already been done
+	 * in Slim Bootloader stages. Therefore, let's use this car_init as
+	 * very first entry point of slimbootloader_start.
+	 */
+	jmp	slimbootloader_start
+
+	/* DO NOT REACH HERE */
+	jmp	.
diff --git a/arch/x86/cpu/slimbootloader/slimbootloader.c b/arch/x86/cpu/slimbootloader/slimbootloader.c
new file mode 100644
index 0000000000..9f3a61ec61
--- /dev/null
+++ b/arch/x86/cpu/slimbootloader/slimbootloader.c
@@ -0,0 +1,21 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2019 Intel Corporation <www.intel.com>
+ */
+
+#include <common.h>
+
+int arch_cpu_init(void)
+{
+	return x86_cpu_init_f();
+}
+
+int checkcpu(void)
+{
+	return 0;
+}
+
+int print_cpuinfo(void)
+{
+	return default_print_cpuinfo();
+}
diff --git a/arch/x86/include/asm/arch-slimbootloader/slimbootloader.h b/arch/x86/include/asm/arch-slimbootloader/slimbootloader.h
new file mode 100644
index 0000000000..7309a83724
--- /dev/null
+++ b/arch/x86/include/asm/arch-slimbootloader/slimbootloader.h
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2019 Intel Corporation <www.intel.com>
+ */
+
+#ifndef __SLIMBOOTLOADER_ARCH_H__
+#define __SLIMBOOTLOADER_ARCH_H__
+
+#include <common.h>
+
+#endif
diff --git a/arch/x86/include/asm/global_data.h b/arch/x86/include/asm/global_data.h
index 9398ec33b2..674efaaa01 100644
--- a/arch/x86/include/asm/global_data.h
+++ b/arch/x86/include/asm/global_data.h
@@ -83,7 +83,7 @@ struct arch_global_data {
 	const struct pch_gpio_map *gpio_map;	/* board GPIO map */
 	struct memory_info meminfo;	/* Memory information */
 	struct pei_memory_info pei_meminfo;	/* PEI memory information */
-#ifdef CONFIG_HAVE_FSP
+#if defined(CONFIG_HAVE_FSP) || defined(CONFIG_SYS_SLIMBOOTLOADER)
 	void *hob_list;			/* FSP HOB list */
 #endif
 	struct mtrr_request mtrr_req[MAX_MTRR_REQUESTS];
diff --git a/arch/x86/lib/asm-offsets.c b/arch/x86/lib/asm-offsets.c
index 90dce22b25..258c0bbc2c 100644
--- a/arch/x86/lib/asm-offsets.c
+++ b/arch/x86/lib/asm-offsets.c
@@ -17,7 +17,7 @@
 int main(void)
 {
 	DEFINE(GD_BIST, offsetof(gd_t, arch.bist));
-#ifdef CONFIG_HAVE_FSP
+#if defined(CONFIG_HAVE_FSP) || defined(CONFIG_SYS_SLIMBOOTLOADER)
 	DEFINE(GD_HOB_LIST, offsetof(gd_t, arch.hob_list));
 #endif
 	DEFINE(GD_TABLE, offsetof(gd_t, arch.table));
-- 
2.20.1



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