@@ -9,6 +9,9 @@ ifeq ($(CROSS_COMPILE),)
CROSS_COMPILE := avr32-linux-
endif
+# avr32 has generic board support
+__HAVE_ARCH_GENERIC_BOARD := y
+
CONFIG_STANDALONE_LOAD_ADDR ?= 0x00000000
PLATFORM_RELFLAGS += -ffixed-r5 -fPIC -mno-init-got -mrelax
@@ -48,9 +48,11 @@ SECTIONS
_edata = .;
.bss (NOLOAD) : {
+ __bss_start = .;
*(.bss)
*(.bss.*)
}
. = ALIGN(8);
__bss_end = .;
+ __init_end = .;
}
@@ -8,5 +8,6 @@
#define _ASM_CONFIG_H_
#define CONFIG_NEEDS_MANUAL_RELOC
+#define CONFIG_SYS_GENERIC_GLOBAL_DATA
#endif
@@ -6,6 +6,11 @@
#ifndef __ASM_U_BOOT_H__
#define __ASM_U_BOOT_H__ 1
+#ifdef CONFIG_SYS_GENERIC_BOARD
+/* Use the generic board which requires a unified bd_info */
+#include <asm-generic/u-boot.h>
+#else
+
typedef struct bd_info {
unsigned char bi_phy_id[4];
unsigned long bi_board_number;
@@ -22,6 +27,8 @@ typedef struct bd_info {
#define bi_memstart bi_dram[0].start
#define bi_memsize bi_dram[0].size
+#endif
+
/* For image.h:image_check_target_arch() */
#define IH_ARCH_DEFAULT IH_ARCH_AVR32
@@ -8,7 +8,10 @@
#
obj-y += memset.o
+ifndef CONFIG_SYS_GENERIC_BOARD
obj-y += board.o
+endif
obj-$(CONFIG_CMD_BOOTM) += bootm.o
obj-y += interrupts.o
obj-y += dram_init.o
+obj-y += stack.o
@@ -7,6 +7,11 @@
#include <asm/sysreg.h>
+int interrupt_init(void)
+{
+ return 0;
+}
+
void enable_interrupts(void)
{
asm volatile("csrf %0" : : "n"(SYSREG_GM_OFFSET));
new file mode 100644
@@ -0,0 +1,23 @@
+/*
+ * Copyright (C) 2015 Andreas Bießmann <andreas.devel@googlemail.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+#include <common.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int arch_reserve_stacks(void)
+{
+ ulong *s;
+
+ gd->start_addr_sp &= ~0xf;
+
+ gd->arch.stack_end = gd->start_addr_sp;
+
+ s = (ulong *)gd->start_addr_sp;
+ *s = 0;
+ *--s = 0;
+
+ return 0;
+}
@@ -865,7 +865,7 @@ static init_fnc_t init_sequence_f[] = {
#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_AVR32)
dram_init, /* configure available RAM banks */
#endif
#if defined(CONFIG_MIPS) || defined(CONFIG_PPC)
@@ -55,6 +55,9 @@
#include <dm/root.h>
#include <linux/compiler.h>
#include <linux/err.h>
+#ifdef CONFIG_AVR32
+#include <asm/arch/mmu.h>
+#endif
DECLARE_GLOBAL_DATA_PTR;
@@ -514,7 +517,7 @@ static int show_model_r(void)
#endif
/* enable exceptions */
-#ifdef CONFIG_ARM
+#if defined(CONFIG_ARM) || defined(CONFIG_AVR32)
static int initr_enable_interrupts(void)
{
enable_interrupts();
@@ -841,10 +844,10 @@ init_fnc_t init_sequence_r[] = {
initr_kgdb,
#endif
interrupt_init,
-#if defined(CONFIG_ARM)
+#if defined(CONFIG_ARM) || defined(CONFIG_AVR32)
initr_enable_interrupts,
#endif
-#ifdef CONFIG_X86
+#if defined(CONFIG_X86) || defined(CONFIG_AVR32)
timer_init, /* initialize timer */
#endif
#if defined(CONFIG_STATUS_LED) && defined(STATUS_LED_BOOT)
@@ -909,6 +912,10 @@ void board_init_r(gd_t *new_gd, ulong dest_addr)
int i;
#endif
+#ifdef CONFIG_AVR32
+ mmu_init_r(dest_addr);
+#endif
+
#if !defined(CONFIG_X86) && !defined(CONFIG_ARM) && !defined(CONFIG_ARM64)
gd = new_gd;
#endif
@@ -32,6 +32,10 @@ typedef struct bd_info {
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 */
+#ifdef CONFIG_AVR32
+ unsigned char bi_phy_id[4]; /* PHY address for ATAG_ETHERNET */
+ unsigned long bi_board_number;/* ATAG_BOARDINFO */
+#endif
#ifdef CONFIG_ARM
unsigned long bi_arm_freq; /* arm frequency */
unsigned long bi_dsp_freq; /* dsp core frequency */
Signed-off-by: Andreas Bießmann <andreas.devel@googlemail.com> --- This version still has the mmu_init_r() in common/board_r. Removing this now is not that easy ... I'd love to get it in as is and change it later to the board_init_f_r() sequence. Changes in v2: - remove bootparams allocation, provide as extra patch - use the else path in setup_mon_len() - provide arch_reserve_stacks() for avr32 - use the newly introduced dram_init() Changes in v1: - add timer_init in board_r - remove extern declaration of mmu_init_r() arch/avr32/config.mk | 3 +++ arch/avr32/cpu/u-boot.lds | 2 ++ arch/avr32/include/asm/config.h | 1 + arch/avr32/include/asm/u-boot.h | 7 +++++++ arch/avr32/lib/Makefile | 3 +++ arch/avr32/lib/interrupts.c | 5 +++++ arch/avr32/lib/stack.c | 23 +++++++++++++++++++++++ common/board_f.c | 2 +- common/board_r.c | 13 ++++++++++--- include/asm-generic/u-boot.h | 4 ++++ 10 files changed, 59 insertions(+), 4 deletions(-) create mode 100644 arch/avr32/lib/stack.c