Hi Bin,
On 28 January 2015 at 07:20, Bin Meng bmeng.cn@gmail.com wrote:
Add minimum codes to support Intel Quark SoC. DRAM initialization is not ready yet so a hardcoded gd->ram_size is assigned.
Signed-off-by: Bin Meng bmeng.cn@gmail.com
arch/x86/cpu/quark/Kconfig | 63 ++++++++++++++++++++++++++++++ arch/x86/cpu/quark/Makefile | 8 ++++ arch/x86/cpu/quark/dram.c | 39 +++++++++++++++++++ arch/x86/cpu/quark/pci.c | 70 ++++++++++++++++++++++++++++++++++ arch/x86/cpu/quark/quark.c | 44 +++++++++++++++++++++ arch/x86/include/asm/arch-quark/gpio.h | 13 +++++++ 6 files changed, 237 insertions(+) create mode 100644 arch/x86/cpu/quark/Kconfig create mode 100644 arch/x86/cpu/quark/Makefile create mode 100644 arch/x86/cpu/quark/dram.c create mode 100644 arch/x86/cpu/quark/pci.c create mode 100644 arch/x86/cpu/quark/quark.c create mode 100644 arch/x86/include/asm/arch-quark/gpio.h
diff --git a/arch/x86/cpu/quark/Kconfig b/arch/x86/cpu/quark/Kconfig new file mode 100644 index 0000000..a71cc6c --- /dev/null +++ b/arch/x86/cpu/quark/Kconfig @@ -0,0 +1,63 @@ +# +# Copyright (C) 2015, Bin Meng bmeng.cn@gmail.com +# +# SPDX-License-Identifier: GPL-2.0+ +#
+config INTEL_QUARK
boolselect HAVE_RMU+if INTEL_QUARK
+config HAVE_RMU
bool "Add a Remote Management Unit (RMU) binary"helpSelect this option to add a Remote Management Unit (RMU) binaryto the resulting U-Boot image. It is a data block (up to 64K) ofmachine specific code which must be put in the flash for the RMU
machine-specific
within the Quark SoC processor to access when powered up beforesystem BIOS is executed.
So does this happen before the reset vector?!
+config RMU_FILE
string "Remote Management Unit (RMU) binary filename"depends on HAVE_RMUdefault "rmu.bin"helpThe filename of the file to use as Remote Management Unit (RMU)binary in the board directory.+config RMU_ADDR
hex "Remote Management Unit (RMU) binary location"depends on HAVE_RMUdefault 0xfff00000helpThe location of the RMU binary is determined by a strap. It must beput in flash at a location matching the strap-determined base address.The default base address of 0xfff00000 indicates that the binary mustbe located at offset 0 from the beginning of a 1MB flash device.+config HAVE_CMC
booldefault HAVE_RMU+config CMC_FILE
stringdepends on HAVE_CMCdefault RMU_FILE+config CMC_ADDR
hexdepends on HAVE_CMCdefault RMU_ADDR+config SYS_CAR_ADDR
hexdefault 0x80000000+config SYS_CAR_SIZE
hexdefault 0x8000+endif diff --git a/arch/x86/cpu/quark/Makefile b/arch/x86/cpu/quark/Makefile new file mode 100644 index 0000000..168c1e6 --- /dev/null +++ b/arch/x86/cpu/quark/Makefile @@ -0,0 +1,8 @@ +# +# Copyright (C) 2015, Bin Meng bmeng.cn@gmail.com +# +# SPDX-License-Identifier: GPL-2.0+ +#
+obj-y += car.o dram.o msg_port.o quark.o +obj-$(CONFIG_PCI) += pci.o diff --git a/arch/x86/cpu/quark/dram.c b/arch/x86/cpu/quark/dram.c new file mode 100644 index 0000000..fbdc3cd --- /dev/null +++ b/arch/x86/cpu/quark/dram.c @@ -0,0 +1,39 @@ +/*
- Copyright (C) 2015, Bin Meng bmeng.cn@gmail.com
- SPDX-License-Identifier: GPL-2.0+
- */
+#include <common.h> +#include <asm/post.h> +#include <asm/arch/quark.h>
+DECLARE_GLOBAL_DATA_PTR;
+int dram_init(void) +{
/* hardcode the DRAM size for now */gd->ram_size = DRAM_MAX_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 gd->ram_size;+} diff --git a/arch/x86/cpu/quark/pci.c b/arch/x86/cpu/quark/pci.c new file mode 100644 index 0000000..354e15a --- /dev/null +++ b/arch/x86/cpu/quark/pci.c @@ -0,0 +1,70 @@ +/*
- Copyright (C) 2015, 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/device.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) +{
return 0;+}
+int pci_skip_dev(struct pci_controller *hose, pci_dev_t dev) +{
/** TODO:** For some unknown reason, the PCI enumeration process hangs* when it scans to the PCIe root port 0 (D23:F0) & 1 (D23:F1).** For now we just skip these two devices, and this needs to* be revisited later.*/if (dev == QUARK_HOST_BRIDGE ||dev == QUARK_PCIE0 || dev == QUARK_PCIE1) {return 1;
BTW I saw a similar thing on Minnowboard Max.
}return 0;+} diff --git a/arch/x86/cpu/quark/quark.c b/arch/x86/cpu/quark/quark.c new file mode 100644 index 0000000..47ba152 --- /dev/null +++ b/arch/x86/cpu/quark/quark.c @@ -0,0 +1,44 @@ +/*
- Copyright (C) 2015, Bin Meng bmeng.cn@gmail.com
- SPDX-License-Identifier: GPL-2.0+
- */
+#include <common.h> +#include <asm/io.h> +#include <asm/pci.h> +#include <asm/post.h> +#include <asm/processor.h>
+int arch_cpu_init(void) +{
struct pci_controller *hose;int ret;post_code(POST_CPU_INIT);+#ifdef CONFIG_SYS_X86_TSC_TIMER
timer_set_base(rdtsc());+#endif
ret = x86_cpu_init_f();if (ret)return ret;ret = pci_early_init_hose(&hose);if (ret)return ret;return 0;+}
+int print_cpuinfo(void) +{
post_code(POST_CPU_INFO);return default_print_cpuinfo();+}
+void reset_cpu(ulong addr) +{
/* cold reset */outb(0x08, PORT_RESET);+} diff --git a/arch/x86/include/asm/arch-quark/gpio.h b/arch/x86/include/asm/arch-quark/gpio.h new file mode 100644 index 0000000..ca8cba4 --- /dev/null +++ b/arch/x86/include/asm/arch-quark/gpio.h @@ -0,0 +1,13 @@ +/*
- Copyright (C) 2015, Bin Meng bmeng.cn@gmail.com
- SPDX-License-Identifier: GPL-2.0+
- */
+#ifndef _X86_ARCH_GPIO_H_ +#define _X86_ARCH_GPIO_H_
+/* Where in config space is the register that points to the GPIO registers? */ +#define PCI_CFG_GPIOBASE 0x44
Should this be in device tree?
+#endif /* _X86_ARCH_GPIO_H_ */
1.8.2.1
Looks good to me.
Regards, Simon