CONFIG_STANDALONE_LOAD_ADDR ?= 0x80F00000
PLATFORM_CPPFLAGS += -ffixed-r31 -D__microblaze__
+
+ifeq ($(CONFIG_SPL_BUILD),)
+PLATFORM_CPPFLAGS += -fPIC
+endif
+__HAVE_ARCH_GENERIC_BOARD := y
bnei r6, 2b
3: /* jumping to board_init */
#ifndef CONFIG_SPL_BUILD
+ or r5, r0, r0 /* flags - empty */
brai board_init_f
#else
addi r31, r0, CONFIG_SYS_SPL_MALLOC_END
rtsd r15, 8
or r0, r0, r0
.end out16
+
+/*
+ * Relocate u-boot
+ */
+ .text
+ .global relocate_code
+ .ent relocate_code
+ .align 2
+relocate_code:
+ /*
+ * r5 - start_addr_sp
+ * r6 - new_gd
+ * r7 - reloc_addr
+ */
+ addi r1, r5, 0 /* Start to use new SP */
+ addi r31, r6, 0 /* Start to use new GD */
+
+ add r23, r0, r7 /* Move reloc addr to r23 */
+ /* Relocate text and data - r12 temp value */
+ addi r21, r0, _start
+ addi r22, r0, __end - 4 /* Include BSS too */
+1: lwi r12, r21, 0 /* Load u-boot data */
+ swi r12, r23, 0 /* Write zero to loc */
+ addi r21, r21, 4 /* Increment to next loc - origin code */
+ cmp r12, r21, r22 /* Check if we have reach the end */
+ bneid r12, 1b
+ addi r23, r23, 4 /* Increment to next loc - relocate code */
+
+ /* R23 points to the base address. */
+ add r23, r0, r7 /* Move reloc addr to r23 */
+ addi r24, r0, CONFIG_SYS_TEXT_BASE /* Get reloc offset */
+ rsub r23, r24, r23 /* keep - this is already here gd->reloc_off */
+
+ addik r6, r0, 0x2 /* BIG/LITTLE endian offset */
+ lwi r7, r0, 0x28
+ swi r6, r0, 0x28 /* used first unused MB vector */
+ lbui r10, r0, 0x28 /* used first unused MB vector */
+ swi r7, r0, 0x28
+
+#ifdef CONFIG_SYS_USR_EXCEP
+ addik r6, r0, _exception_handler
+ addk r6, r6, r23 /* add offset */
+ sw r6, r1, r0
+ lhu r7, r1, r10
+ rsubi r8, r10, 0xa
+ sh r7, r0, r8
+ rsubi r8, r10, 0xe
+ sh r6, r0, r8
+#endif
+ addik r6, r0, _hw_exception_handler
+ addk r6, r6, r23 /* add offset */
+ sw r6, r1, r0
+ lhu r7, r1, r10
+ rsubi r8, r10, 0x22
+ sh r7, r0, r8
+ rsubi r8, r10, 0x26
+ sh r6, r0, r8
+
+ addik r6, r0, _interrupt_handler
+ addk r6, r6, r23 /* add offset */
+ sw r6, r1, r0
+ lhu r7, r1, r10
+ rsubi r8, r10, 0x12
+ sh r7, r0, r8
+ rsubi r8, r10, 0x16
+ sh r6, r0, r8
+
+ /* Check if GOT exist */
+ addik r21, r23, _got_start
+ addik r22, r23, _got_end
+ cmpu r12, r21, r22
+ beqi r12, 2f /* No GOT table - jump over */
+
+ /* Skip last 3 entries plus 1 because of loop boundary below */
+ addik r22, r22, -0x10
+
+ /* Relocate the GOT. */
+3: lw r12, r21, r0 /* Load entry */
+ addk r12, r12, r23 /* Add reloc offset */
+ sw r12, r21, r0 /* Save entry back */
+
+ cmpu r12, r21, r22 /* Check if this cross boundary */
+ bneid r12, 3b
+ addik r21. r21, 4
+
+ /* Update pointer to GOT */
+ mfs r20, rpc
+ addik r20, r20, _GLOBAL_OFFSET_TABLE_ + 8
+ addk r20, r20, r23
+
+ /* Flush caches to ensure consistency */
+ addik r5, r0, 0
+ addik r6, r0, XILINX_DCACHE_BYTE_SIZE
+ bralid r15, flush_cache
+ nop
+
+2: addi r5, r31, 0 /* gd is initialized in board_r.c */
+ addi r6, r0, CONFIG_SYS_TEXT_BASE
+ addi r12, r23, board_init_r
+ bra r12 /* Jump to relocated code */
+
+ .end relocate_code
#endif
__data_end = .;
}
+ .got ALIGN(4):
+ {
+ _got_start = .;
+ *(.got*)
+ . = ALIGN(4);
+ _got_end = .;
+ }
+
. = ALIGN(4);
.u_boot_list : {
KEEP(*(SORT(.u_boot_list*)));
}
+ __init_end = . ;
.bss ALIGN(0x4):
{
#ifndef _ASM_CONFIG_H_
#define _ASM_CONFIG_H_
+#ifndef CONFIG_SPL_BUILD
+#define CONFIG_NEEDS_MANUAL_RELOC
+#endif
+
+#define CONFIG_NR_DRAM_BANKS 1
+#define CONFIG_SYS_GENERIC_BOARD
+#define CONFIG_SYS_GENERIC_GLOBAL_DATA
+
#endif
#ifndef _U_BOOT_H_
#define _U_BOOT_H_
-typedef struct bd_info {
- unsigned long bi_memstart; /* start of DRAM memory */
- phys_size_t bi_memsize; /* size of DRAM memory in bytes */
- unsigned long bi_flashstart; /* start of FLASH memory */
- unsigned long bi_flashsize; /* size of FLASH memory */
- unsigned long bi_flashoffset; /* reserved area for startup monitor */
- unsigned long bi_sramstart; /* start of SRAM memory */
- unsigned long bi_sramsize; /* size of SRAM memory */
- ulong bi_boot_params; /* where this board expects params */
-} bd_t;
+#include <asm-generic/u-boot.h>
/* For image.h:image_check_target_arch() */
#define IH_ARCH_DEFAULT IH_ARCH_MICROBLAZE
# SPDX-License-Identifier: GPL-2.0+
#
-obj-y += board.o
obj-$(CONFIG_CMD_BOOTM) += bootm.o
obj-y += muldi3.o
+++ /dev/null
-/*
- * (C) Copyright 2007 Michal Simek
- * (C) Copyright 2004 Atmark Techno, Inc.
- *
- * Michal SIMEK <monstr@monstr.eu>
- * Yasushi SHOJI <yashi@atmark-techno.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <common.h>
-#include <command.h>
-#include <malloc.h>
-#include <version.h>
-#include <watchdog.h>
-#include <stdio_dev.h>
-#include <serial.h>
-#include <net.h>
-#include <spi.h>
-#include <linux/compiler.h>
-#include <asm/processor.h>
-#include <asm/microblaze_intc.h>
-#include <fdtdec.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-static int display_banner(void)
-{
- printf("\n\n%s\n\n", version_string);
- return 0;
-}
-
-/*
- * All attempts to come up with a "common" initialization sequence
- * that works for all boards and architectures failed: some of the
- * requirements are just _too_ different. To get rid of the resulting
- * mess of board dependend #ifdef'ed code we now make the whole
- * initialization sequence configurable to the user.
- *
- * The requirements for any new initalization function is simple: it
- * receives a pointer to the "global data" structure as it's only
- * argument, and returns an integer return code, where 0 means
- * "continue" and != 0 means "fatal error, hang the system".
- */
-typedef int (init_fnc_t) (void);
-
-init_fnc_t *init_sequence[] = {
- env_init,
-#ifdef CONFIG_OF_CONTROL
- fdtdec_check_fdt,
-#endif
- serial_init,
-#ifndef CONFIG_SPL_BUILD
- console_init_f,
-#endif
- display_banner,
-#ifndef CONFIG_SPL_BUILD
- interrupt_init,
- timer_init,
-#endif
- NULL,
-};
-
-unsigned long monitor_flash_len;
-
-void board_init_f(ulong not_used)
-{
- bd_t *bd;
- init_fnc_t **init_fnc_ptr;
- gd = (gd_t *)(CONFIG_SYS_SDRAM_BASE + CONFIG_SYS_GBL_DATA_OFFSET);
- bd = (bd_t *)(CONFIG_SYS_SDRAM_BASE + CONFIG_SYS_GBL_DATA_OFFSET
- - GENERATED_BD_INFO_SIZE);
-#if defined(CONFIG_CMD_FLASH) && !defined(CONFIG_SPL_BUILD)
- ulong flash_size = 0;
-#endif
- asm ("nop"); /* FIXME gd is not initialize - wait */
- memset((void *)gd, 0, GENERATED_GBL_DATA_SIZE);
- memset((void *)bd, 0, GENERATED_BD_INFO_SIZE);
- gd->bd = bd;
- gd->baudrate = CONFIG_BAUDRATE;
- bd->bi_memstart = CONFIG_SYS_SDRAM_BASE;
- bd->bi_memsize = CONFIG_SYS_SDRAM_SIZE;
- gd->flags |= GD_FLG_RELOC; /* tell others: relocation done */
-
- monitor_flash_len = __end - __text_start;
-
-#ifdef CONFIG_OF_EMBED
- /* Get a pointer to the FDT */
- gd->fdt_blob = __dtb_dt_begin;
-#elif defined CONFIG_OF_SEPARATE
- /* FDT is at end of image */
- gd->fdt_blob = (void *)__end;
-#endif
-
-#ifndef CONFIG_SPL_BUILD
- /* Allow the early environment to override the fdt address */
- gd->fdt_blob = (void *)getenv_ulong("fdtcontroladdr", 16,
- (uintptr_t)gd->fdt_blob);
-#endif
-
- /*
- * The Malloc area is immediately below the monitor copy in DRAM
- * aka CONFIG_SYS_MONITOR_BASE - Note there is no need for reloc_off
- * as our monitory code is run from SDRAM
- */
- mem_malloc_init(CONFIG_SYS_MALLOC_BASE, CONFIG_SYS_MALLOC_LEN);
-
- serial_initialize();
-
-#ifdef CONFIG_XILINX_TB_WATCHDOG
- hw_watchdog_init();
-#endif
- for (init_fnc_ptr = init_sequence; *init_fnc_ptr; ++init_fnc_ptr) {
- WATCHDOG_RESET();
- if ((*init_fnc_ptr) () != 0)
- hang();
- }
-
-#ifndef CONFIG_SPL_BUILD
-#ifdef CONFIG_OF_CONTROL
- /* For now, put this check after the console is ready */
- if (fdtdec_prepare_fdt())
- panic("** No FDT - please see doc/README.fdt-control");
- else
- printf("DTB: 0x%x\n", (u32)gd->fdt_blob);
-#endif
-
- puts("SDRAM :\n");
- printf("\t\tIcache:%s\n", icache_status() ? "ON" : "OFF");
- printf("\t\tDcache:%s\n", dcache_status() ? "ON" : "OFF");
- printf("\tU-Boot Start:0x%08x\n", CONFIG_SYS_TEXT_BASE);
-
-#if defined(CONFIG_CMD_FLASH)
- puts("Flash: ");
- bd->bi_flashstart = CONFIG_SYS_FLASH_BASE;
- flash_size = flash_init();
- if (bd->bi_flashstart && flash_size > 0) {
-# ifdef CONFIG_SYS_FLASH_CHECKSUM
- print_size(flash_size, "");
- /*
- * Compute and print flash CRC if flashchecksum is set to 'y'
- *
- * NOTE: Maybe we should add some WATCHDOG_RESET()? XXX
- */
- if (getenv_yesno("flashchecksum") == 1) {
- printf(" CRC: %08X",
- crc32(0, (const u8 *)bd->bi_flashstart,
- flash_size)
- );
- }
- putc('\n');
-# else /* !CONFIG_SYS_FLASH_CHECKSUM */
- print_size(flash_size, "\n");
-# endif /* CONFIG_SYS_FLASH_CHECKSUM */
- bd->bi_flashsize = flash_size;
- bd->bi_flashoffset = bd->bi_flashstart + flash_size;
- } else {
- puts("Flash init FAILED");
- bd->bi_flashstart = 0;
- bd->bi_flashsize = 0;
- bd->bi_flashoffset = 0;
- }
-#endif
-
-#ifdef CONFIG_SPI
- spi_init();
-#endif
-
- /* relocate environment function pointers etc. */
- env_relocate();
-
- /* Initialize stdio devices */
- stdio_init();
-
- /* Initialize the jump table for applications */
- jumptable_init();
-
- /* Initialize the console (after the relocation and devices init) */
- console_init_r();
-
- board_init();
-
- /* Initialize from environment */
- load_addr = getenv_ulong("loadaddr", 16, load_addr);
-
-#if defined(CONFIG_CMD_NET)
- printf("Net: ");
- eth_initialize(gd->bd);
-
- uchar enetaddr[6];
- eth_getenv_enetaddr("ethaddr", enetaddr);
- printf("MAC: %pM\n", enetaddr);
-#endif
-
- /* main_loop */
- for (;;) {
- WATCHDOG_RESET();
- main_loop();
- }
-#endif /* CONFIG_SPL_BUILD */
-}
#include <common.h>
#include <config.h>
+#include <fdtdec.h>
#include <netdev.h>
#include <asm/processor.h>
#include <asm/microblaze_intc.h>
#include <asm/asm.h>
#include <asm/gpio.h>
+DECLARE_GLOBAL_DATA_PTR;
+
#ifdef CONFIG_XILINX_GPIO
static int reset_pin = -1;
#endif
+#ifdef CONFIG_OF_CONTROL
+ulong ram_base;
+
+void dram_init_banksize(void)
+{
+ gd->bd->bi_dram[0].start = ram_base;
+ gd->bd->bi_dram[0].size = get_effective_memsize();
+}
+
+int dram_init(void)
+{
+ int node;
+ fdt_addr_t addr;
+ fdt_size_t size;
+ const void *blob = gd->fdt_blob;
+
+ node = fdt_node_offset_by_prop_value(blob, -1, "device_type",
+ "memory", 7);
+ if (node == -FDT_ERR_NOTFOUND) {
+ debug("DRAM: Can't get memory node\n");
+ return 1;
+ }
+ addr = fdtdec_get_addr_size(blob, node, "reg", &size);
+ if (addr == FDT_ADDR_T_NONE || size == 0) {
+ debug("DRAM: Can't get base address or size\n");
+ return 1;
+ }
+ ram_base = addr;
+
+ gd->ram_top = addr; /* In setup_dest_addr() is done +ram_size */
+ gd->ram_size = size;
+
+ return 0;
+};
+#else
+int dram_init(void)
+{
+ gd->ram_size = CONFIG_SYS_SDRAM_SIZE;
+
+ return 0;
+}
+#endif
+
int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
#ifdef CONFIG_XILINX_GPIO
static int setup_mon_len(void)
{
-#ifdef __ARM__
+#if defined(__ARM__) || defined(__MICROBLAZE__)
gd->mon_len = (ulong)&__bss_end - (ulong)_start;
#elif defined(CONFIG_SANDBOX)
gd->mon_len = (ulong)&_end - (ulong)_init;
#endif
announce_dram_init,
/* TODO: unify all these dram functions? */
-#if defined(CONFIG_ARM) || defined(CONFIG_X86)
+#if defined(CONFIG_ARM) || defined(CONFIG_X86) || defined(CONFIG_MICROBLAZE)
dram_init, /* configure available RAM banks */
#endif
#if defined(CONFIG_MIPS) || defined(CONFIG_PPC)
#if defined(CONFIG_ARM)
initr_enable_interrupts,
#endif
-#ifdef CONFIG_X86
+#if defined(CONFIG_X86) || defined(CONFIG_MICROBLAZE)
timer_init, /* initialize timer */
#endif
#if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
int do_bdinfo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
bd_t *bd = gd->bd;
- print_num("mem start ", (ulong)bd->bi_memstart);
- print_lnum("mem size ", (u64)bd->bi_memsize);
+ int i;
+
+ for (i = 0; i < CONFIG_NR_DRAM_BANKS; ++i) {
+ print_num("DRAM bank", i);
+ print_num("-> start", bd->bi_dram[i].start);
+ print_num("-> size", bd->bi_dram[i].size);
+ }
+
print_num("flash start ", (ulong)bd->bi_flashstart);
print_num("flash size ", (ulong)bd->bi_flashsize);
print_num("flash offset ", (ulong)bd->bi_flashoffset);
print_eths();
#endif
printf("baudrate = %u bps\n", gd->baudrate);
+ print_num("relocaddr", gd->relocaddr);
+ print_num("reloc off", gd->reloc_off);
+
return 0;
}
# define CONFIG_XILINX_TB_WATCHDOG
#endif
-/*
- * memory layout - Example
- * CONFIG_SYS_TEXT_BASE = 0x1200_0000; defined in config.mk
- * CONFIG_SYS_SRAM_BASE = 0x1000_0000;
- * CONFIG_SYS_SRAM_SIZE = 0x0400_0000; 64MB
- *
- * CONFIG_SYS_MONITOR_LEN = 0x40000
- * CONFIG_SYS_MALLOC_LEN = 3 * CONFIG_SYS_MONITOR_LEN = 0xC0000
- *
- * CONFIG_SYS_GBL_DATA_OFFSET = 0x1000_0000 + 0x0400_0000 - 0x1000 = 0x13FF_F000
- * CONFIG_SYS_MONITOR_BASE = 0x13FF_F000 - CONFIG_SYS_MONITOR_LEN = 0x13FB_F000
- * CONFIG_SYS_MALLOC_BASE = 0x13FB_F000 - CONFIG_SYS_MALLOC_LEN = 0x13EF_F000
- *
- * 0x1000_0000 CONFIG_SYS_SDRAM_BASE
- * MEMTEST_AREA 64kB
- * FREE
- * 0x1200_0000 CONFIG_SYS_TEXT_BASE
- * U-BOOT code
- * 0x1202_0000
- * FREE
- *
- * STACK
- * 0x13EF_F000 CONFIG_SYS_MALLOC_BASE
- * MALLOC_AREA 768kB Alloc
- * 0x13FB_F000 CONFIG_SYS_MONITOR_BASE
- * MONITOR_CODE 256kB Env
- * 0x13FF_F000 CONFIG_SYS_GBL_DATA_OFFSET
- * GLOBAL_DATA 4kB bd, gd
- * 0x1400_0000 CONFIG_SYS_SDRAM_BASE + CONFIG_SYS_SDRAM_SIZE
- */
-
+#ifndef CONFIG_OF_CONTROL
/* ddr sdram - main memory */
-#define CONFIG_SYS_SDRAM_BASE XILINX_RAM_START
-#define CONFIG_SYS_SDRAM_SIZE XILINX_RAM_SIZE
-#define CONFIG_SYS_MEMTEST_START CONFIG_SYS_SDRAM_BASE
-#define CONFIG_SYS_MEMTEST_END (CONFIG_SYS_SDRAM_BASE + 0x1000)
-
-/* global pointer */
-/* start of global data */
-#define CONFIG_SYS_GBL_DATA_OFFSET \
- (CONFIG_SYS_SDRAM_SIZE - GENERATED_GBL_DATA_SIZE)
-
-/* monitor code */
-#define SIZE 0x40000
-#define CONFIG_SYS_MONITOR_LEN SIZE
-#define CONFIG_SYS_MONITOR_BASE \
- (CONFIG_SYS_SDRAM_BASE + CONFIG_SYS_GBL_DATA_OFFSET \
- - CONFIG_SYS_MONITOR_LEN - GENERATED_BD_INFO_SIZE)
-#define CONFIG_SYS_MONITOR_END \
- (CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN)
-#define CONFIG_SYS_MALLOC_LEN (SIZE * 3)
-#define CONFIG_SYS_MALLOC_BASE \
- (CONFIG_SYS_MONITOR_BASE - CONFIG_SYS_MALLOC_LEN)
-
-/* stack */
-#define CONFIG_SYS_INIT_SP_OFFSET CONFIG_SYS_MALLOC_BASE
+# define CONFIG_SYS_SDRAM_BASE XILINX_RAM_START
+# define CONFIG_SYS_SDRAM_SIZE XILINX_RAM_SIZE
+#endif
+
+#define CONFIG_SYS_MALLOC_LEN 0xC0000
+
+/* Stack location before relocation */
+#define CONFIG_SYS_INIT_SP_OFFSET CONFIG_SYS_TEXT_BASE
/*
* CFI flash memory layout - Example
projects / u-boot / commitdiff