From ad8783cb1cb258b71d81800f72cd64eb44081653 Mon Sep 17 00:00:00 2001 From: Paul Burton Date: Thu, 8 Sep 2016 07:47:39 +0100 Subject: boston: Introduce support for the MIPS Boston development board This patch introduces support for building U-Boot to run on the MIPS Boston development board. This is a board built around an FPGA & an Intel EG20T Platform Controller Hub, used largely as part of the development of new CPUs and their software support. It is essentially the successor to the older MIPS Malta board. Signed-off-by: Paul Burton --- board/imgtec/boston/Kconfig | 16 +++++++++++ board/imgtec/boston/MAINTAINERS | 6 ++++ board/imgtec/boston/Makefile | 9 ++++++ board/imgtec/boston/boston-lcd.h | 21 ++++++++++++++ board/imgtec/boston/boston-regs.h | 26 +++++++++++++++++ board/imgtec/boston/checkboard.c | 30 ++++++++++++++++++++ board/imgtec/boston/ddr.c | 30 ++++++++++++++++++++ board/imgtec/boston/lowlevel_init.S | 56 +++++++++++++++++++++++++++++++++++++ 8 files changed, 194 insertions(+) create mode 100644 board/imgtec/boston/Kconfig create mode 100644 board/imgtec/boston/MAINTAINERS create mode 100644 board/imgtec/boston/Makefile create mode 100644 board/imgtec/boston/boston-lcd.h create mode 100644 board/imgtec/boston/boston-regs.h create mode 100644 board/imgtec/boston/checkboard.c create mode 100644 board/imgtec/boston/ddr.c create mode 100644 board/imgtec/boston/lowlevel_init.S (limited to 'board/imgtec') diff --git a/board/imgtec/boston/Kconfig b/board/imgtec/boston/Kconfig new file mode 100644 index 0000000000..ab76a3c626 --- /dev/null +++ b/board/imgtec/boston/Kconfig @@ -0,0 +1,16 @@ +if TARGET_BOSTON + +config SYS_BOARD + default "boston" + +config SYS_VENDOR + default "imgtec" + +config SYS_CONFIG_NAME + default "boston" + +config SYS_TEXT_BASE + default 0x9fc00000 if 32BIT + default 0xffffffff9fc00000 if 64BIT + +endif diff --git a/board/imgtec/boston/MAINTAINERS b/board/imgtec/boston/MAINTAINERS new file mode 100644 index 0000000000..30dd481a26 --- /dev/null +++ b/board/imgtec/boston/MAINTAINERS @@ -0,0 +1,6 @@ +BOSTON BOARD +M: Paul Burton +S: Maintained +F: board/imgtec/boston/ +F: include/configs/boston.h +F: configs/boston_defconfig diff --git a/board/imgtec/boston/Makefile b/board/imgtec/boston/Makefile new file mode 100644 index 0000000000..deda457f3c --- /dev/null +++ b/board/imgtec/boston/Makefile @@ -0,0 +1,9 @@ +# +# Copyright (C) 2016 Imagination Technologies +# +# SPDX-License-Identifier: GPL-2.0 +# + +obj-y += checkboard.o +obj-y += ddr.o +obj-y += lowlevel_init.o diff --git a/board/imgtec/boston/boston-lcd.h b/board/imgtec/boston/boston-lcd.h new file mode 100644 index 0000000000..9f5c1b9005 --- /dev/null +++ b/board/imgtec/boston/boston-lcd.h @@ -0,0 +1,21 @@ +/* + * Copyright (C) 2016 Imagination Technologies + * + * SPDX-License-Identifier: GPL-2.0 + */ + +#ifndef __BOARD_BOSTON_LCD_H__ +#define __BOARD_BOSTON_LCD_H__ + +/** + * lowlevel_display() - Display a message on Boston's LCD + * @msg: The string to display + * + * Display the string @msg on the 7 character LCD display of the Boston board. + * This is typically used for debug or to present some form of status + * indication to the user, allowing faults to be identified when things go + * wrong early enough that the UART isn't up. + */ +void lowlevel_display(const char msg[static 8]); + +#endif /* __BOARD_BOSTON_LCD_H__ */ diff --git a/board/imgtec/boston/boston-regs.h b/board/imgtec/boston/boston-regs.h new file mode 100644 index 0000000000..b9dfbb4763 --- /dev/null +++ b/board/imgtec/boston/boston-regs.h @@ -0,0 +1,26 @@ +/* + * Copyright (C) 2016 Imagination Technologies + * + * SPDX-License-Identifier: GPL-2.0 + */ + +#ifndef __BOARD_BOSTON_REGS_H__ +#define __BOARD_BOSTON_REGS_H__ + +#include + +#define BOSTON_PLAT_BASE CKSEG1ADDR(0x17ffd000) +#define BOSTON_LCD_BASE CKSEG1ADDR(0x17fff000) + +/* + * Platform Register Definitions + */ +#define BOSTON_PLAT_CORE_CL (BOSTON_PLAT_BASE + 0x04) + +#define BOSTON_PLAT_DDR3STAT (BOSTON_PLAT_BASE + 0x14) +# define BOSTON_PLAT_DDR3STAT_CALIB (1 << 2) + +#define BOSTON_PLAT_DDRCONF0 (BOSTON_PLAT_BASE + 0x38) +# define BOSTON_PLAT_DDRCONF0_SIZE (0xf << 0) + +#endif /* __BOARD_BOSTON_REGS_H__ */ diff --git a/board/imgtec/boston/checkboard.c b/board/imgtec/boston/checkboard.c new file mode 100644 index 0000000000..93eae7f603 --- /dev/null +++ b/board/imgtec/boston/checkboard.c @@ -0,0 +1,30 @@ +/* + * Copyright (C) 2016 Imagination Technologies + * + * SPDX-License-Identifier: GPL-2.0 + */ + +#include + +#include +#include + +#include "boston-lcd.h" +#include "boston-regs.h" + +int checkboard(void) +{ + u32 changelist; + + lowlevel_display("U-boot "); + + printf("Board: MIPS Boston\n"); + + printf("CPU: 0x%08x", read_c0_prid()); + changelist = __raw_readl((uint32_t *)BOSTON_PLAT_CORE_CL); + if (changelist > 1) + printf(" cl%x", changelist); + putc('\n'); + + return 0; +} diff --git a/board/imgtec/boston/ddr.c b/board/imgtec/boston/ddr.c new file mode 100644 index 0000000000..ceffef61ef --- /dev/null +++ b/board/imgtec/boston/ddr.c @@ -0,0 +1,30 @@ +/* + * Copyright (C) 2016 Imagination Technologies + * + * SPDX-License-Identifier: GPL-2.0 + */ + +#include + +#include + +#include "boston-regs.h" + +phys_size_t initdram(int board_type) +{ + u32 ddrconf0 = __raw_readl((uint32_t *)BOSTON_PLAT_DDRCONF0); + + return (phys_size_t)(ddrconf0 & BOSTON_PLAT_DDRCONF0_SIZE) << 30; +} + +ulong board_get_usable_ram_top(ulong total_size) +{ + DECLARE_GLOBAL_DATA_PTR; + + if (gd->ram_top < CONFIG_SYS_SDRAM_BASE) { + /* 2GB wrapped around to 0 */ + return CKSEG0ADDR(256 << 20); + } + + return min_t(unsigned long, gd->ram_top, CKSEG0ADDR(256 << 20)); +} diff --git a/board/imgtec/boston/lowlevel_init.S b/board/imgtec/boston/lowlevel_init.S new file mode 100644 index 0000000000..0c01aa981d --- /dev/null +++ b/board/imgtec/boston/lowlevel_init.S @@ -0,0 +1,56 @@ +/* + * Copyright (C) 2016 Imagination Technologies + * + * SPDX-License-Identifier: GPL-2.0 + */ + +#include + +#include +#include +#include +#include + +#include "boston-regs.h" + +.data + +msg_ddr_cal: .ascii "DDR Cal " +msg_ddr_ok: .ascii "DDR OK " + +.text + +LEAF(lowlevel_init) + move s0, ra + + PTR_LA a0, msg_ddr_cal + bal lowlevel_display + + PTR_LI t0, BOSTON_PLAT_DDR3STAT +1: lw t1, 0(t0) + andi t1, t1, BOSTON_PLAT_DDR3STAT_CALIB + beqz t1, 1b + + PTR_LA a0, msg_ddr_ok + bal lowlevel_display + + move v0, zero + jr s0 + END(lowlevel_init) + +LEAF(lowlevel_display) + .set push + .set noat + PTR_LI AT, BOSTON_LCD_BASE +#ifdef CONFIG_64BIT + ld k1, 0(a0) + sd k1, 0(AT) +#else + lw k1, 0(a0) + sw k1, 0(AT) + lw k1, 4(a0) + sw k1, 4(AT) +#endif + .set pop +1: jr ra + END(lowlevel_display) -- cgit v1.2.1