[U-Boot] [PATCH 17/25] x86: Add basic support to queensbay platform and crownbay board
Bin Meng
bmeng.cn at gmail.com
Fri Dec 5 10:40:36 CET 2014
Hi Simon,
On Fri, Dec 5, 2014 at 7:48 AM, Simon Glass <sjg at chromium.org> wrote:
> Hi Bin,
>
> On 4 December 2014 at 08:02, Bin Meng <bmeng.cn at gmail.com> wrote:
>> Implement minimum required functions for the basic support to
>> queensbay platform and crownbay board.
>>
>> Signed-off-by: Bin Meng <bmeng.cn at gmail.com>
>> ---
>> arch/x86/cpu/queensbay/Makefile | 9 +++++
>> arch/x86/cpu/queensbay/tnc.c | 48 +++++++++++++++++++++++
>> arch/x86/cpu/queensbay/tnc_car.S | 75 ++++++++++++++++++++++++++++++++++++
>> arch/x86/cpu/queensbay/tnc_dram.c | 81 +++++++++++++++++++++++++++++++++++++++
>> arch/x86/cpu/queensbay/tnc_pci.c | 62 ++++++++++++++++++++++++++++++
>> board/intel/crownbay/MAINTAINERS | 6 +++
>> board/intel/crownbay/Makefile | 7 ++++
>> board/intel/crownbay/crownbay.c | 20 ++++++++++
>> board/intel/crownbay/start.S | 9 +++++
>> 9 files changed, 317 insertions(+)
>> create mode 100644 arch/x86/cpu/queensbay/Makefile
>> create mode 100644 arch/x86/cpu/queensbay/tnc.c
>> create mode 100644 arch/x86/cpu/queensbay/tnc_car.S
>> create mode 100644 arch/x86/cpu/queensbay/tnc_dram.c
>> create mode 100644 arch/x86/cpu/queensbay/tnc_pci.c
>> create mode 100644 board/intel/crownbay/MAINTAINERS
>> create mode 100644 board/intel/crownbay/Makefile
>> create mode 100644 board/intel/crownbay/crownbay.c
>> create mode 100644 board/intel/crownbay/start.S
>>
>> diff --git a/arch/x86/cpu/queensbay/Makefile b/arch/x86/cpu/queensbay/Makefile
>> new file mode 100644
>> index 0000000..ace04ca
>> --- /dev/null
>> +++ b/arch/x86/cpu/queensbay/Makefile
>> @@ -0,0 +1,9 @@
>> +#
>> +# Copyright (C) 2014, Bin Meng <bmeng.cn at 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
>> diff --git a/arch/x86/cpu/queensbay/tnc.c b/arch/x86/cpu/queensbay/tnc.c
>> new file mode 100644
>> index 0000000..c0d19aa
>> --- /dev/null
>> +++ b/arch/x86/cpu/queensbay/tnc.c
>> @@ -0,0 +1,48 @@
>> +/*
>> + * Copyright (C) 2014, Bin Meng <bmeng.cn at 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>
>> +
>> +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, 0xcf9);
>
> I think there is a constant somewhere for cf9?
Yes, I found one in arch/x86/include/asm/processor.h and will use that.
>> +}
>> +
>> +void board_final_cleanup(void)
>> +{
>> + EFI_STATUS status;
>> +
>> + /* call into FspNotify */
>
> Remove blank line
OK.
>> +
>> + debug("Calling into FSP (notify phase EnumInitPhaseReadyToBoot): ");
>> + status = FspNotifyWrapper(NULL, EnumInitPhaseReadyToBoot);
>
> Are we stuck with these mixed case identifiers?
I may have to fix FSP support library coding style issues in v2.
>> + if (status != FSP_SUCCESS)
>> + debug("fail, error code %x\n", status);
>> + else
>> + debug("OK\n");
>> +
>> + return;
>> +}
>> diff --git a/arch/x86/cpu/queensbay/tnc_car.S b/arch/x86/cpu/queensbay/tnc_car.S
>> new file mode 100644
>> index 0000000..722de7f
>> --- /dev/null
>> +++ b/arch/x86/cpu/queensbay/tnc_car.S
>> @@ -0,0 +1,75 @@
>> +/*
>> + * Copyright (C) 2014, Bin Meng <bmeng.cn at 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
>
> Is there no way to save it anywhere?
Unfortunately I did not find a way to save the ebp through the FSP
call so far. The FSP documentation mentions that FSP tries to save
bootloader's stack before call to FspInit to a temporary memory block
after the call, however I found it is not working as documented. I may
look into this in the future, but for now I think we have to let it
be.
>> +
>> +car_init_start:
>> + post_code(POST_CAR_START)
>> + lea find_fsp_header_stack, %esp
>> + jmp FindFspHeader
>> +
>> +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_stack, %esp
>> + jmp *%eax
>> +
>> +temp_ram_init_ret:
>> + addl $4, %esp
>> + cmp $0, %eax
>> + jz continue
>> + post_code(POST_CAR_FAILURE)
>> +
>> +die:
>> + hlt
>> + jmp die
>> + hlt
>> +
>> +continue:
>> + post_code(POST_CAR_CPU_CACHE)
>> + jmp car_init_ret
>> +
>> + .balign 4
>> +find_fsp_header_stack:
>> + .long find_fsp_header_ret
>> +
>> + .balign 4
>> +temp_ram_init_stack:
>> + .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"
>
> Does the microcode have to be applied before we even have temporary RAM?
Unfortunately the microcode is required to be a parameter of the call
to TempRamInit, which is defined by the FSP specification.
>
>> +ucode_size = ( . - ucode_start)
>> diff --git a/arch/x86/cpu/queensbay/tnc_dram.c b/arch/x86/cpu/queensbay/tnc_dram.c
>> new file mode 100644
>> index 0000000..f7b9f19
>> --- /dev/null
>> +++ b/arch/x86/cpu/queensbay/tnc_dram.c
>> @@ -0,0 +1,81 @@
>> +/*
>> + * Copyright (C) 2014, Bin Meng <bmeng.cn at 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;
>> + EFI_PEI_HOB_POINTERS hob;
>> +
>> + hob.Raw = gd->arch.hob_list;
>> + while (!END_OF_HOB_LIST(hob)) {
>> + if (hob.Header->HobType == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR) {
>> + if (hob.ResourceDescriptor->ResourceType == EFI_RESOURCE_SYSTEM_MEMORY ||
>> + hob.ResourceDescriptor->ResourceType == EFI_RESOURCE_MEMORY_RESERVED) {
>> + ram_size += hob.ResourceDescriptor->ResourceLength;
>> + }
>> + }
>> + 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 GetUsableLowMemTop(gd->arch.hob_list);
>> +}
>> +
>> +unsigned install_e820_map(unsigned max_entries, struct e820entry *entries)
>> +{
>> + unsigned num_entries = 0;
>> +
>> + EFI_PEI_HOB_POINTERS hob;
>> +
>> + hob.Raw = gd->arch.hob_list;
>> +
>> + while (!END_OF_HOB_LIST(hob)) {
>> + if (hob.Header->HobType == EFI_HOB_TYPE_RESOURCE_DESCRIPTOR) {
>> + if (hob.ResourceDescriptor->ResourceType == EFI_RESOURCE_SYSTEM_MEMORY) {
>> + entries[num_entries].addr = hob.ResourceDescriptor->PhysicalStart;
>
> Can we make these identifiers follow style?
I may have to fix FSP support library coding style issues in v2.
>> + entries[num_entries].size = hob.ResourceDescriptor->ResourceLength;
>> + entries[num_entries].type = E820_RAM;
>> + } else if (hob.ResourceDescriptor->ResourceType == EFI_RESOURCE_MEMORY_RESERVED) {
>> + entries[num_entries].addr = hob.ResourceDescriptor->PhysicalStart;
>> + entries[num_entries].size = hob.ResourceDescriptor->ResourceLength;
>> + entries[num_entries].type = E820_RESERVED;
>> + }
>> +
>> + }
>> + hob.Raw = GET_NEXT_HOB(hob);
>> + num_entries++;
>> + }
>> +
>> + return num_entries;
>> +}
>> diff --git a/arch/x86/cpu/queensbay/tnc_pci.c b/arch/x86/cpu/queensbay/tnc_pci.c
>> new file mode 100644
>> index 0000000..13d4691
>> --- /dev/null
>> +++ b/arch/x86/cpu/queensbay/tnc_pci.c
>> @@ -0,0 +1,62 @@
>> +/*
>> + * Copyright (C) 2014, Bin Meng <bmeng.cn at 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)
>> +{
>> + EFI_STATUS status;
>> +
>> + /* call into FspNotify */
>
> Remove blank line
OK.
>> +
>> + debug("Calling into FSP (notify phase EnumInitPhaseAfterPciEnumeration): ");
>> + status = FspNotifyWrapper(NULL, EnumInitPhaseAfterPciEnumeration);
>> + if (status != FSP_SUCCESS)
>> + debug("fail, error code %x\n", status);
>> + else
>> + debug("OK\n");
>> +
>> + return 0;
>> +}
>> diff --git a/board/intel/crownbay/MAINTAINERS b/board/intel/crownbay/MAINTAINERS
>> new file mode 100644
>> index 0000000..1eb6869
>> --- /dev/null
>> +++ b/board/intel/crownbay/MAINTAINERS
>> @@ -0,0 +1,6 @@
>> +INTEL CROWNBAY BOARD
>> +M: Bin Meng <bmeng.cn at gmail.com>
>> +S: Maintained
>> +F: board/intel/crownbay/
>> +F: include/configs/crownbay.h
>> +F: configs/crownbay_defconfig
>> diff --git a/board/intel/crownbay/Makefile b/board/intel/crownbay/Makefile
>> new file mode 100644
>> index 0000000..aeb219b
>> --- /dev/null
>> +++ b/board/intel/crownbay/Makefile
>> @@ -0,0 +1,7 @@
>> +#
>> +# Copyright (C) 2014, Bin Meng <bmeng.cn at gmail.com>
>> +#
>> +# SPDX-License-Identifier: GPL-2.0+
>> +#
>> +
>> +obj-y += crownbay.o start.o
>> diff --git a/board/intel/crownbay/crownbay.c b/board/intel/crownbay/crownbay.c
>> new file mode 100644
>> index 0000000..bbd2596
>> --- /dev/null
>> +++ b/board/intel/crownbay/crownbay.c
>> @@ -0,0 +1,20 @@
>> +/*
>> + * Copyright (C) 2014, Bin Meng <bmeng.cn at gmail.com>
>> + *
>> + * SPDX-License-Identifier: GPL-2.0+
>> + */
>> +
>> +#include <common.h>
>> +#include <asm/pnp_def.h>
>> +#include <smsc_lpc47m.h>
>> +
>> +#define SERIAL_DEV PNP_DEV(0x2e, 4)
>> +#define UART0_BASE 0x3f8
>
> I think there is a constant for this somewhere already?
It was once defined in arch/x86/include/asm/ibmpc.h, however it was
deleted by commit e98a03c "dm: x86: Convert coreboot serial to use
driver model". Should I add that back?
>> +
>> +DECLARE_GLOBAL_DATA_PTR;
>> +
>> +int board_early_init_f(void)
>> +{
>> + lpc47m_enable_serial(SERIAL_DEV, UART0_BASE);
>
> blank line before return. Why do we need to do this so early?
>
board_early_init_f() is the last routine which can be used to do such
thing before call to serial_init().
[snip]
Regards,
Bin
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