x86: Add basic support to queensbay platform and crownbay board

Implement minimum required functions for the basic support to
queensbay platform and crownbay board.

Currently the implementation is to call fsp_init() in the car_init().
We may move that call to cpu_init_f() in the future.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>

arch/x86/cpu/queensbay/Makefile

@@ -0,0 +1,9 @@
+#
+# Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-y += tnc_car.o tnc_dram.o tnc.o
+obj-y += fsp_configs.o fsp_support.o
+obj-$(CONFIG_PCI) += tnc_pci.o

arch/x86/cpu/queensbay/tnc.c

@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/post.h>
+#include <asm/arch/fsp/fsp_support.h>
+#include <asm/processor.h>
+
+int arch_cpu_init(void)
+{
+	post_code(POST_CPU_INIT);
+#ifdef CONFIG_SYS_X86_TSC_TIMER
+	timer_set_base(rdtsc());
+#endif
+
+	return x86_cpu_init_f();
+}
+
+int print_cpuinfo(void)
+{
+	post_code(POST_CPU_INFO);
+	return default_print_cpuinfo();
+}
+
+void reset_cpu(ulong addr)
+{
+	/* cold reset */
+	outb(0x06, PORT_RESET);
+}
+
+void board_final_cleanup(void)
+{
+	u32 status;
+
+	/* call into FspNotify */
+	debug("Calling into FSP (notify phase INIT_PHASE_BOOT): ");
+	status = fsp_notify(NULL, INIT_PHASE_BOOT);
+	if (status != FSP_SUCCESS)
+		debug("fail, error code %x\n", status);
+	else
+		debug("OK\n");
+
+	return;
+}

arch/x86/cpu/queensbay/tnc_car.S

@@ -0,0 +1,127 @@
+/*
+ * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <config.h>
+#include <asm/post.h>
+
+.globl car_init
+car_init:
+	/*
+	 * Note: ebp holds the BIST value (built-in self test) so far, but ebp
+	 * will be destroyed through the FSP call, thus we have to test the
+	 * BIST value here before we call into FSP.
+	 */
+	test	%ebp, %ebp
+	jz	car_init_start
+	post_code(POST_BIST_FAILURE)
+	jmp	die
+
+car_init_start:
+	post_code(POST_CAR_START)
+	lea	find_fsp_header_romstack, %esp
+	jmp	find_fsp_header
+
+find_fsp_header_ret:
+	/* EAX points to FSP_INFO_HEADER */
+	mov	%eax, %ebp
+
+	/* sanity test */
+	cmp	$CONFIG_FSP_LOCATION, %eax
+	jb	die
+
+	/* calculate TempRamInitEntry address */
+	mov	0x30(%ebp), %eax
+	add	0x1c(%ebp), %eax
+
+	/* call FSP TempRamInitEntry to setup temporary stack */
+	lea	temp_ram_init_romstack, %esp
+	jmp	*%eax
+
+temp_ram_init_ret:
+	addl	$4, %esp
+	cmp	$0, %eax
+	jnz	car_init_fail
+
+	post_code(POST_CAR_CPU_CACHE)
+
+	/*
+	 * The FSP TempRamInit initializes the ecx and edx registers to
+	 * point to a temporary but writable memory range (Cache-As-RAM).
+	 * ecx: the start of this temporary memory range,
+	 * edx: the end of this range.
+	 */
+
+	/* stack grows down from top of CAR */
+	movl	%edx, %esp
+
+	/*
+	 * TODO:
+	 *
+	 * According to FSP architecture spec, the fsp_init() will not return
+	 * to its caller, instead it requires the bootloader to provide a
+	 * so-called continuation function to pass into the FSP as a parameter
+	 * of fsp_init, and fsp_init() will call that continuation function
+	 * directly.
+	 *
+	 * The call to fsp_init() may need to be moved out of the car_init()
+	 * to cpu_init_f() with the help of some inline assembly codes.
+	 * Note there is another issue that fsp_init() will setup another stack
+	 * using the fsp_init parameter stack_top after DRAM is initialized,
+	 * which means any data on the previous stack (on the CAR) gets lost
+	 * (ie: U-Boot global_data). FSP is supposed to support such scenario,
+	 * however it does not work. This should be revisited in the future.
+	 */
+	movl	$CONFIG_FSP_TEMP_RAM_ADDR, %eax
+	xorl	%edx, %edx
+	xorl	%ecx, %ecx
+	call	fsp_init
+
+.global fsp_init_done
+fsp_init_done:
+	/*
+	 * We come here from FspInit with eax pointing to the HOB list.
+	 * Save eax to esi temporarily.
+	 */
+	movl	%eax, %esi
+	/*
+	 * Re-initialize the ebp (BIST) to zero, as we already reach here
+	 * which means we passed BIST testing before.
+	 */
+	xorl	%ebp, %ebp
+	jmp	car_init_ret
+
+car_init_fail:
+	post_code(POST_CAR_FAILURE)
+
+die:
+	hlt
+	jmp	die
+	hlt
+
+	/*
+	 * The function call before CAR initialization is tricky. It cannot
+	 * be called using the 'call' instruction but only the 'jmp' with
+	 * the help of a handcrafted stack in the ROM. The stack needs to
+	 * contain the function return address as well as the parameters.
+	 */
+	.balign	4
+find_fsp_header_romstack:
+	.long	find_fsp_header_ret
+
+	.balign	4
+temp_ram_init_romstack:
+	.long	temp_ram_init_ret
+	.long	temp_ram_init_params
+temp_ram_init_params:
+	.long	ucode_start		/* microcode base */
+	.long	ucode_size		/* microcode size */
+	.long	CONFIG_SYS_MONITOR_BASE	/* code region base */
+	.long	CONFIG_SYS_MONITOR_LEN	/* code region size */
+
+	.balign	4
+ucode_start:
+	.include "arch/x86/cpu/queensbay/M0220661105.inc"
+ucode_size = ( . - ucode_start)

arch/x86/cpu/queensbay/tnc_dram.c

@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/arch/fsp/fsp_support.h>
+#include <asm/e820.h>
+#include <asm/post.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int dram_init(void)
+{
+	phys_size_t ram_size = 0;
+	union hob_pointers_t hob;
+
+	hob.raw = gd->arch.hob_list;
+	while (!END_OF_HOB(hob)) {
+		if (hob.hdr->type == HOB_TYPE_RES_DESC) {
+			if (hob.res_desc->type == RES_SYS_MEM ||
+			    hob.res_desc->type == RES_MEM_RESERVED) {
+				ram_size += hob.res_desc->len;
+			}
+		}
+		hob.raw = GET_NEXT_HOB(hob);
+	}
+
+	gd->ram_size = ram_size;
+	post_code(POST_DRAM);
+
+	return 0;
+}
+
+void dram_init_banksize(void)
+{
+	gd->bd->bi_dram[0].start = 0;
+	gd->bd->bi_dram[0].size = gd->ram_size;
+}
+
+/*
+ * This function looks for the highest region of memory lower than 4GB which
+ * has enough space for U-Boot where U-Boot is aligned on a page boundary.
+ * It overrides the default implementation found elsewhere which simply
+ * picks the end of ram, wherever that may be. The location of the stack,
+ * the relocation address, and how far U-Boot is moved by relocation are
+ * set in the global data structure.
+ */
+ulong board_get_usable_ram_top(ulong total_size)
+{
+	return get_usable_lowmem_top(gd->arch.hob_list);
+}
+
+unsigned install_e820_map(unsigned max_entries, struct e820entry *entries)
+{
+	unsigned num_entries = 0;
+
+	union hob_pointers_t hob;
+
+	hob.raw = gd->arch.hob_list;
+
+	while (!END_OF_HOB(hob)) {
+		if (hob.hdr->type == HOB_TYPE_RES_DESC) {
+			entries[num_entries].addr = hob.res_desc->phys_start;
+			entries[num_entries].size = hob.res_desc->len;
+
+			if (hob.res_desc->type == RES_SYS_MEM)
+				entries[num_entries].type = E820_RAM;
+			else if (hob.res_desc->type == RES_MEM_RESERVED)
+				entries[num_entries].type = E820_RESERVED;
+		}
+		hob.raw = GET_NEXT_HOB(hob);
+		num_entries++;
+	}
+
+	return num_entries;
+}

arch/x86/cpu/queensbay/tnc_pci.c

@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <pci.h>
+#include <asm/pci.h>
+#include <asm/arch/fsp/fsp_support.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+void board_pci_setup_hose(struct pci_controller *hose)
+{
+	hose->first_busno = 0;
+	hose->last_busno = 0;
+
+	/* PCI memory space */
+	pci_set_region(hose->regions + 0,
+		       CONFIG_PCI_MEM_BUS,
+		       CONFIG_PCI_MEM_PHYS,
+		       CONFIG_PCI_MEM_SIZE,
+		       PCI_REGION_MEM);
+
+	/* PCI IO space */
+	pci_set_region(hose->regions + 1,
+		       CONFIG_PCI_IO_BUS,
+		       CONFIG_PCI_IO_PHYS,
+		       CONFIG_PCI_IO_SIZE,
+		       PCI_REGION_IO);
+
+	pci_set_region(hose->regions + 2,
+		       CONFIG_PCI_PREF_BUS,
+		       CONFIG_PCI_PREF_PHYS,
+		       CONFIG_PCI_PREF_SIZE,
+		       PCI_REGION_PREFETCH);
+
+	pci_set_region(hose->regions + 3,
+		       0,
+		       0,
+		       gd->ram_size,
+		       PCI_REGION_MEM | PCI_REGION_SYS_MEMORY);
+
+	hose->region_count = 4;
+}
+
+int board_pci_post_scan(struct pci_controller *hose)
+{
+	u32 status;
+
+	/* call into FspNotify */
+	debug("Calling into FSP (notify phase INIT_PHASE_PCI): ");
+	status = fsp_notify(NULL, INIT_PHASE_PCI);
+	if (status != FSP_SUCCESS)
+		debug("fail, error code %x\n", status);
+	else
+		debug("OK\n");
+
+	return 0;
+}

arch/x86/include/asm/ibmpc.h

@@ -18,4 +18,7 @@
 #define SYSCTLA         0x92
 #define SLAVE_PIC       0xa0
 
+#define UART0_BASE	0x3f8
+#define UART1_BASE	0x2f8
+
 #endif

board/intel/crownbay/MAINTAINERS

@@ -0,0 +1,6 @@
+INTEL CROWNBAY BOARD
+M:	Bin Meng <bmeng.cn@gmail.com>
+S:	Maintained
+F:	board/intel/crownbay/
+F:	include/configs/crownbay.h
+F:	configs/crownbay_defconfig

board/intel/crownbay/Makefile

@@ -0,0 +1,7 @@
+#
+# Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+obj-y	+= crownbay.o start.o

board/intel/crownbay/crownbay.c

@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/ibmpc.h>
+#include <asm/pnp_def.h>
+#include <smsc_lpc47m.h>
+
+#define SERIAL_DEV PNP_DEV(0x2e, 4)
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int board_early_init_f(void)
+{
+	lpc47m_enable_serial(SERIAL_DEV, UART0_BASE);
+
+	return 0;
+}

board/intel/crownbay/start.S

@@ -0,0 +1,9 @@
+/*
+ * Copyright (C) 2014, Bin Meng <bmeng.cn@gmail.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+.globl early_board_init
+early_board_init:
+	jmp	early_board_init_ret