while (1)
;
}
-void save_boot_params(u32 r0, u32 r1, u32 r2, u32 r3) {}
ENTRY(save_boot_params)
ldr r1, =OMAP_SRAM_SCRATCH_BOOT_PARAMS
str r0, [r1]
- bx lr
+ b save_boot_params_ret
ENDPROC(save_boot_params)
ENTRY(set_pl310_ctrl_reg)
ldr r5, [r0, #0x4]
and r5, r5, #0xff
str r5, [r4]
- bx lr
+ b save_boot_params_ret
ENDPROC(save_boot_params)
#endif
*************************************************************************/
.globl reset
+ .globl save_boot_params_ret
reset:
- bl save_boot_params
+ /* Allow the board to save important registers */
+ b save_boot_params
+save_boot_params_ret:
/*
* disable interrupts (FIQ and IRQ), also set the cpu to SVC32 mode,
* except if in HYP mode already
*
*************************************************************************/
ENTRY(save_boot_params)
- bx lr @ back to my caller
+ b save_boot_params_ret @ back to my caller
ENDPROC(save_boot_params)
.weak save_boot_params
obj-y += board.o
obj-y += clock.o
obj-y += cpu_info.o
+obj-y += dram_helpers.o
obj-y += pinmux.o
obj-y += usbc.o
obj-$(CONFIG_MACH_SUN6I) += prcm.o
obj-$(CONFIG_MACH_SUN6I) += dram_sun6i.o
obj-$(CONFIG_MACH_SUN7I) += dram_sun4i.o
obj-$(CONFIG_MACH_SUN8I) += dram_sun8i.o
-ifdef CONFIG_SPL_FEL
-obj-y += start.o
-endif
+obj-y += fel_utils.o
endif
#include <linux/compiler.h>
+struct fel_stash {
+ uint32_t sp;
+ uint32_t lr;
+ uint32_t cpsr;
+ uint32_t sctlr;
+ uint32_t vbar;
+ uint32_t cr;
+};
+
+struct fel_stash fel_stash __attribute__((section(".data")));
+
static int gpio_init(void)
{
#if CONFIG_CONS_INDEX == 1 && defined(CONFIG_UART0_PORT_F)
return 0;
}
+void spl_board_load_image(void)
+{
+ debug("Returning to FEL sp=%x, lr=%x\n", fel_stash.sp, fel_stash.lr);
+ return_to_fel(fel_stash.sp, fel_stash.lr);
+}
+
void s_init(void)
{
#if defined CONFIG_MACH_SUN6I || defined CONFIG_MACH_SUN8I
*/
u32 spl_boot_device(void)
{
- return BOOT_DEVICE_MMC1;
+#ifdef CONFIG_SPL_FEL
+ /*
+ * This is the legacy compile time configuration for a special FEL
+ * enabled build. It has many restrictions and can only boot over USB.
+ */
+ return BOOT_DEVICE_BOARD;
+#else
+ /*
+ * When booting from the SD card, the "eGON.BT0" signature is expected
+ * to be found in memory at the address 0x0004 (see the "mksunxiboot"
+ * tool, which generates this header).
+ *
+ * When booting in the FEL mode over USB, this signature is patched in
+ * memory and replaced with something else by the 'fel' tool. This other
+ * signature is selected in such a way, that it can't be present in a
+ * valid bootable SD card image (because the BROM would refuse to
+ * execute the SPL in this case).
+ *
+ * This branch is just making a decision at runtime whether to load
+ * the main u-boot binary from the SD card (if the "eGON.BT0" signature
+ * is found) or return to the FEL code in the BROM to wait and receive
+ * the main u-boot binary over USB.
+ */
+ if (readl(4) == 0x4E4F4765 && readl(8) == 0x3054422E) /* eGON.BT0 */
+ return BOOT_DEVICE_MMC1;
+ else
+ return BOOT_DEVICE_BOARD;
+#endif
}
/* No confirmation data available in SPL yet. Hardcode bootmode */
# Build a combined spl + u-boot image
ifdef CONFIG_SPL
ifndef CONFIG_SPL_BUILD
-ifndef CONFIG_SPL_FEL
ALL-y += u-boot-sunxi-with-spl.bin
endif
endif
-endif
--- /dev/null
+/*
+ * DRAM init helper functions
+ *
+ * (C) Copyright 2015 Hans de Goede <hdegoede@redhat.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/dram.h>
+
+/*
+ * Wait up to 1s for value to be set in given part of reg.
+ */
+void mctl_await_completion(u32 *reg, u32 mask, u32 val)
+{
+ unsigned long tmo = timer_get_us() + 1000000;
+
+ while ((readl(reg) & mask) != val) {
+ if (timer_get_us() > tmo)
+ panic("Timeout initialising DRAM\n");
+ }
+}
+
+/*
+ * Test if memory at offset offset matches memory at begin of DRAM
+ */
+bool mctl_mem_matches(u32 offset)
+{
+ /* Try to write different values to RAM at two addresses */
+ writel(0, CONFIG_SYS_SDRAM_BASE);
+ writel(0xaa55aa55, CONFIG_SYS_SDRAM_BASE + offset);
+ /* Check if the same value is actually observed when reading back */
+ return readl(CONFIG_SYS_SDRAM_BASE) ==
+ readl(CONFIG_SYS_SDRAM_BASE + offset);
+}
--- /dev/null
+/*
+ * Utility functions for FEL mode.
+ *
+ * Copyright (c) 2015 Google, Inc
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <asm-offsets.h>
+#include <config.h>
+#include <asm/system.h>
+#include <linux/linkage.h>
+
+ENTRY(save_boot_params)
+ ldr r0, =fel_stash
+ str sp, [r0, #0]
+ str lr, [r0, #4]
+ mrs lr, cpsr @ Read CPSR
+ str lr, [r0, #8]
+ mrc p15, 0, lr, c1, c0, 0 @ Read CP15 SCTLR Register
+ str lr, [r0, #12]
+ mrc p15, 0, lr, c12, c0, 0 @ Read VBAR
+ str lr, [r0, #16]
+ mrc p15, 0, lr, c1, c0, 0 @ Read CP15 Control Register
+ str lr, [r0, #20]
+ b save_boot_params_ret
+ENDPROC(save_boot_params)
+
+ENTRY(return_to_fel)
+ mov sp, r0
+ mov lr, r1
+ ldr r0, =fel_stash
+ ldr r1, [r0, #20]
+ mcr p15, 0, r1, c1, c0, 0 @ Write CP15 Control Register
+ ldr r1, [r0, #16]
+ mcr p15, 0, r1, c12, c0, 0 @ Write VBAR
+ ldr r1, [r0, #12]
+ mcr p15, 0, r1, c1, c0, 0 @ Write CP15 SCTLR Register
+ ldr r1, [r0, #8]
+ msr cpsr, r1 @ Write CPSR
+ bx lr
+ENDPROC(return_to_fel)
+++ /dev/null
-/*
- * (C) Copyright 2013
- * Henrik Nordstrom <henrik@henriknordstrom.net>
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-OUTPUT_FORMAT("elf32-littlearm", "elf32-littlearm", "elf32-littlearm")
-OUTPUT_ARCH(arm)
-ENTRY(s_init)
-SECTIONS
-{
- . = 0x00002000;
-
- . = ALIGN(4);
- .text :
- {
- *(.text.s_init)
- *(.text*)
- }
-
- . = ALIGN(4);
- .rodata : { *(SORT_BY_ALIGNMENT(SORT_BY_NAME(.rodata*))) }
-
- . = ALIGN(4);
- .data : {
- *(.data*)
- }
-
- . = ALIGN(4);
- .u_boot_list : {
- KEEP(*(SORT(.u_boot_list*)));
- }
-
- . = ALIGN(4);
- . = .;
-
- . = ALIGN(4);
- .rel.dyn : {
- __rel_dyn_start = .;
- *(.rel*)
- __rel_dyn_end = .;
- }
-
- .dynsym : {
- __dynsym_start = .;
- *(.dynsym)
- }
-
- . = ALIGN(4);
- .note.gnu.build-id :
- {
- *(.note.gnu.build-id)
- }
- _end = .;
-
- . = ALIGN(4096);
- .mmutable : {
- *(.mmutable)
- }
-
- .bss_start __rel_dyn_start (OVERLAY) : {
- KEEP(*(.__bss_start));
- __bss_base = .;
- }
-
- .bss __bss_base (OVERLAY) : {
- *(.bss*)
- . = ALIGN(4);
- __bss_limit = .;
- }
-
- .bss_end __bss_limit (OVERLAY) : {
- KEEP(*(.__bss_end));
- }
-
- /DISCARD/ : { *(.dynstr*) }
- /DISCARD/ : { *(.dynamic*) }
- /DISCARD/ : { *(.plt*) }
- /DISCARD/ : { *(.interp*) }
- /DISCARD/ : { *(.gnu*) }
- /DISCARD/ : { *(.note*) }
-}
#endif
unsigned long sunxi_dram_init(void);
-
-/*
- * Wait up to 1s for value to be set in given part of reg.
- */
-static inline void mctl_await_completion(u32 *reg, u32 mask, u32 val)
-{
- unsigned long tmo = timer_get_us() + 1000000;
-
- while ((readl(reg) & mask) != val) {
- if (timer_get_us() > tmo)
- panic("Timeout initialising DRAM\n");
- }
-}
-
-/*
- * Test if memory at offset offset matches memory at begin of DRAM
- */
-static inline bool mctl_mem_matches(u32 offset)
-{
- /* Try to write different values to RAM at two addresses */
- writel(0, CONFIG_SYS_SDRAM_BASE);
- writel(0xaa55aa55, CONFIG_SYS_SDRAM_BASE + offset);
- /* Check if the same value is actually observed when reading back */
- return readl(CONFIG_SYS_SDRAM_BASE) ==
- readl(CONFIG_SYS_SDRAM_BASE + offset);
-}
+void mctl_await_completion(u32 *reg, u32 mask, u32 val);
+bool mctl_mem_matches(u32 offset);
#endif /* _SUNXI_DRAM_H */
void sdelay(unsigned long);
+/* return_to_fel() - Return to BROM from SPL
+ *
+ * This returns back into the BROM after U-Boot SPL has performed its initial
+ * init. It uses the provided lr and sp to do so.
+ *
+ * @lr: BROM link register value (return address)
+ * @sp: BROM stack pointer
+ */
+void return_to_fel(uint32_t lr, uint32_t sp);
+
#endif
BOOT_DEVICE_SPI,
BOOT_DEVICE_SATA,
BOOT_DEVICE_I2C,
+ BOOT_DEVICE_BOARD,
BOOT_DEVICE_NONE
};
#endif
+/* Board-specific load method */
+void spl_board_load_image(void);
+
/* Linker symbols. */
extern char __bss_start[], __bss_end[];
#ifndef __ASSEMBLY__
+/**
+ * save_boot_params() - Save boot parameters before starting reset sequence
+ *
+ * If you provide this function it will be called immediately U-Boot starts,
+ * both for SPL and U-Boot proper.
+ *
+ * All registers are unchanged from U-Boot entry. No registers need be
+ * preserved.
+ *
+ * This is not a normal C function. There is no stack. Return by branching to
+ * save_boot_params_ret.
+ *
+ * void save_boot_params(u32 r0, u32 r1, u32 r2, u32 r3);
+ */
+
#define isb() __asm__ __volatile__ ("" : : : "memory")
#define nop() __asm__ __volatile__("mov\tr0,r0\t@ nop\n\t");
.global save_boot_params
save_boot_params:
-
+ /* Get return address */
+ ldr lr, =save_boot_params_ret
/* Copy valid attached kernel to address KERNEL_ADDRESS */
bool "SPL/FEL mode support"
depends on SPL
default n
+ help
+ This enables support for Fast Early Loader (FEL) mode. This
+ allows U-Boot to be loaded to the board over USB by the on-chip
+ boot rom. U-Boot should be sent in two parts: SPL first, with
+ 'fel write 0x2000 u-boot-spl.bin; fel exe 0x2000' then U-Boot with
+ 'fel write 0x4a000000 u-boot.bin; fel exe 0x4a000000'. This option
+ shrinks the amount of SRAM available to SPL, so only enable it if
+ you need FEL. Note that enabling this option only allows FEL to be
+ used; it is still possible to boot U-Boot from boot media. U-Boot
+ SPL detects when it is being loaded using FEL.
config UART0_PORT_F
bool "UART0 on MicroSD breakout board"
F: board/sunxi/dram_a20_olinuxino_l2.c
F: configs/A20-OLinuXino-Lime2_defconfig
+AMPE A76 BOARD
+M: Paul Kocialkowski <contact@paulk.fr>
+S: Maintained
+F: configs/Ampe_A76_defconfig
+
COLOMBUS BOARD
M: Maxime Ripard <maxime.ripard@free-electrons.com>
S: Maintained
S: Maintained
F: include/configs/sun7i.h
F: configs/Cubieboard2_defconfig
-F: configs/Cubieboard2_FEL_defconfig
F: configs/Cubietruck_defconfig
-F: configs/Cubietruck_FEL_defconfig
GEMEI-G9 TABLET
M: Priit Laes <plaes@plaes.org>
case BOOT_DEVICE_SATA:
spl_sata_load_image();
break;
+#endif
+#ifdef CONFIG_SPL_BOARD_LOAD_IMAGE
+ case BOOT_DEVICE_BOARD:
+ spl_board_load_image();
+ break;
#endif
default:
#if defined(CONFIG_SPL_SERIAL_SUPPORT) && defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
--- /dev/null
+CONFIG_SPL=y
+CONFIG_SYS_EXTRA_OPTIONS="CONS_INDEX=2,AXP209_POWER"
+CONFIG_FDTFILE="sun5i-a13-ampe-a76.dtb"
+CONFIG_USB_MUSB_SUNXI=y
+CONFIG_USB0_VBUS_PIN="PG12"
+CONFIG_VIDEO_LCD_MODE="x:800,y:480,depth:18,pclk_khz:33000,le:45,ri:82,up:22,lo:22,hs:1,vs:1,sync:3,vmode:0"
+CONFIG_VIDEO_LCD_POWER="AXP0-0"
+CONFIG_VIDEO_LCD_BL_EN="AXP0-1"
+CONFIG_VIDEO_LCD_BL_PWM="PB2"
++S:CONFIG_ARM=y
++S:CONFIG_ARCH_SUNXI=y
++S:CONFIG_MACH_SUN5I=y
++S:CONFIG_DRAM_CLK=432
++S:CONFIG_DRAM_ZQ=123
++S:CONFIG_DRAM_EMR1=4
musb_writel(base, USBC_REG_o_ISCR, reg_val);
}
-static void USBC_ForceVbusValidDisable(__iomem void *base)
-{
- u32 reg_val;
-
- reg_val = musb_readl(base, USBC_REG_o_ISCR);
- reg_val &= ~(0x03 << USBC_BP_ISCR_FORCE_VBUS_VALID);
- reg_val = USBC_WakeUp_ClearChangeDetect(reg_val);
- musb_writel(base, USBC_REG_o_ISCR, reg_val);
-}
-
static void USBC_ForceVbusValidToHigh(__iomem void *base)
{
u32 reg_val;
if (is_host_enabled(musb)) {
/* Host mode */
USBC_ForceIdToLow(musb->mregs);
- USBC_ForceVbusValidToHigh(musb->mregs);
} else {
/* Peripheral mode */
USBC_ForceIdToHigh(musb->mregs);
- USBC_ForceVbusValidDisable(musb->mregs);
}
+ USBC_ForceVbusValidToHigh(musb->mregs);
return 0;
}
GraphicDevice graphic_device;
enum sunxi_monitor monitor;
unsigned int depth;
+ unsigned int fb_size;
} sunxi_display;
#ifdef CONFIG_VIDEO_HDMI
return NULL; /* never reached */
}
+ulong board_get_usable_ram_top(ulong total_size)
+{
+ return gd->ram_top - CONFIG_SUNXI_MAX_FB_SIZE;
+}
+
void *video_hw_init(void)
{
static GraphicDevice *graphic_device = &sunxi_display.graphic_device;
memset(&sunxi_display, 0, sizeof(struct sunxi_display));
- printf("Reserved %dkB of RAM for Framebuffer.\n",
- CONFIG_SUNXI_FB_SIZE >> 10);
- gd->fb_base = gd->ram_top;
-
video_get_ctfb_res_modes(RES_MODE_1024x768, 24, &mode,
&sunxi_display.depth, &options);
#ifdef CONFIG_VIDEO_HDMI
mode->yres, sunxi_get_mon_desc(sunxi_display.monitor));
}
+ sunxi_display.fb_size =
+ (mode->xres * mode->yres * 4 + 0xfff) & ~0xfff;
+ if (sunxi_display.fb_size > CONFIG_SUNXI_MAX_FB_SIZE) {
+ printf("Error need %dkB for fb, but only %dkB is reserved\n",
+ sunxi_display.fb_size >> 10,
+ CONFIG_SUNXI_MAX_FB_SIZE >> 10);
+ return NULL;
+ }
+
+ gd->fb_base = gd->bd->bi_dram[0].start +
+ gd->bd->bi_dram[0].size - sunxi_display.fb_size;
sunxi_engines_init();
sunxi_mode_set(mode, gd->fb_base - CONFIG_SYS_SDRAM_BASE);
{
static GraphicDevice *graphic_device = &sunxi_display.graphic_device;
int offset, ret;
+ u64 start, size;
const char *pipeline = NULL;
#ifdef CONFIG_MACH_SUN4I
return 0; /* Keep older kernels working */
}
+ /*
+ * Do not report the framebuffer as free RAM to the OS, note we cannot
+ * use fdt_add_mem_rsv() here, because then it is still seen as RAM,
+ * and e.g. Linux refuses to iomap RAM on ARM, see:
+ * linux/arch/arm/mm/ioremap.c around line 301.
+ */
+ start = gd->bd->bi_dram[0].start;
+ size = gd->bd->bi_dram[0].size - sunxi_display.fb_size;
+ ret = fdt_fixup_memory_banks(blob, &start, &size, 1);
+ if (ret) {
+ eprintf("Cannot setup simplefb: Error reserving memory\n");
+ return ret;
+ }
+
ret = fdt_setup_simplefb_node(blob, offset, gd->fb_base,
graphic_device->winSizeX, graphic_device->winSizeY,
graphic_device->winSizeX * graphic_device->gdfBytesPP,
*/
#define CONFIG_SUNXI /* sunxi family */
#ifdef CONFIG_SPL_BUILD
-#ifndef CONFIG_SPL_FEL
#define CONFIG_SYS_THUMB_BUILD /* Thumbs mode to save space in SPL */
#endif
-#endif
#include <asm/arch/cpu.h> /* get chip and board defs */
#define CONFIG_SPL_SERIAL_SUPPORT
#define CONFIG_SPL_LIBGENERIC_SUPPORT
+#define CONFIG_SPL_BOARD_LOAD_IMAGE
+
#ifdef CONFIG_SPL_FEL
-#define CONFIG_SPL_LDSCRIPT "arch/arm/cpu/armv7/sunxi/u-boot-spl-fel.lds"
-#define CONFIG_SPL_START_S_PATH "arch/arm/cpu/armv7/sunxi"
#define CONFIG_SPL_TEXT_BASE 0x2000
#define CONFIG_SPL_MAX_SIZE 0x4000 /* 16 KiB */
#ifdef CONFIG_VIDEO
/*
- * The amount of RAM that is reserved for the FB. This will not show up as
- * RAM to the kernel, but will be reclaimed by a KMS driver in future.
+ * The amount of RAM to keep free at the top of RAM when relocating u-boot,
+ * to use as framebuffer. This must be a multiple of 4096.
*/
-#define CONFIG_SUNXI_FB_SIZE (9 << 20)
+#define CONFIG_SUNXI_MAX_FB_SIZE (9 << 20)
/* Do we want to initialize a simple FB? */
#define CONFIG_VIDEO_DT_SIMPLEFB
/* stop x86 thinking in cfbconsole from trying to init a pc keyboard */
#define CONFIG_VGA_AS_SINGLE_DEVICE
-#define CONFIG_SYS_MEM_TOP_HIDE ((CONFIG_SUNXI_FB_SIZE + 0xFFF) & ~0xFFF)
-
/* To be able to hook simplefb into dt */
#ifdef CONFIG_VIDEO_DT_SIMPLEFB
#define CONFIG_OF_BOARD_SETUP
endif
ifdef CONFIG_SUNXI
-ifndef CONFIG_SPL_FEL
ALL-y += $(obj)/sunxi-spl.bin
endif
-endif
ifeq ($(CONFIG_SYS_SOC),"at91")
ALL-y += boot.bin
uint32_t i;
uint32_t sum;
- length = head_p->length;
+ length = le32_to_cpu(head_p->length);
if ((length & 0x3) != 0) /* must 4-byte-aligned */
return -1;
buf = (uint32_t *)head_p;
- head_p->check_sum = STAMP_VALUE; /* fill stamp */
+ head_p->check_sum = cpu_to_le32(STAMP_VALUE); /* fill stamp */
loop = length >> 2;
/* calculate the sum */
for (i = 0, sum = 0; i < loop; i++)
- sum += buf[i];
+ sum += le32_to_cpu(buf[i]);
/* write back check sum */
- head_p->check_sum = sum;
+ head_p->check_sum = cpu_to_le32(sum);
return 0;
}
memcpy(img.header.magic, BOOT0_MAGIC, 8); /* no '0' termination */
img.header.length =
ALIGN(file_size + sizeof(struct boot_file_head), BLOCK_SIZE);
+ img.header.b_instruction = cpu_to_le32(img.header.b_instruction);
+ img.header.length = cpu_to_le32(img.header.length);
gen_check_sum(&img.header);
- count = write(fd_out, &img, img.header.length);
- if (count != img.header.length) {
+ count = write(fd_out, &img, le32_to_cpu(img.header.length));
+ if (count != le32_to_cpu(img.header.length)) {
perror("Writing output");
return EXIT_FAILURE;
}
projects / karo-tx-uboot.git / commitdiff