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
diff --git a/arch/avr32/config.mk b/arch/avr32/config.mk index 469185e..8252f59 100644 --- a/arch/avr32/config.mk +++ b/arch/avr32/config.mk @@ -9,6 +9,9 @@ ifeq ($(CROSS_COMPILE),) CROSS_COMPILE := avr32-linux- endif
+# avr32 has generic board support +__HAVE_ARCH_GENERIC_BOARD := y + CONFIG_STANDALONE_LOAD_ADDR ?= 0x00000000
PLATFORM_RELFLAGS += -ffixed-r5 -fPIC -mno-init-got -mrelax diff --git a/arch/avr32/cpu/u-boot.lds b/arch/avr32/cpu/u-boot.lds index cb29a22..b0180e3 100644 --- a/arch/avr32/cpu/u-boot.lds +++ b/arch/avr32/cpu/u-boot.lds @@ -48,9 +48,11 @@ SECTIONS _edata = .;
.bss (NOLOAD) : { + __bss_start = .; *(.bss) *(.bss.*) } . = ALIGN(8); __bss_end = .; + __init_end = .; } diff --git a/arch/avr32/include/asm/config.h b/arch/avr32/include/asm/config.h index 63056a4..529fe22 100644 --- a/arch/avr32/include/asm/config.h +++ b/arch/avr32/include/asm/config.h @@ -8,5 +8,6 @@ #define _ASM_CONFIG_H_
#define CONFIG_NEEDS_MANUAL_RELOC +#define CONFIG_SYS_GENERIC_GLOBAL_DATA
#endif diff --git a/arch/avr32/include/asm/u-boot.h b/arch/avr32/include/asm/u-boot.h index 232350e..8b047ec 100644 --- a/arch/avr32/include/asm/u-boot.h +++ b/arch/avr32/include/asm/u-boot.h @@ -6,6 +6,11 @@ #ifndef __ASM_U_BOOT_H__ #define __ASM_U_BOOT_H__ 1
+#ifdef CONFIG_SYS_GENERIC_BOARD +/* Use the generic board which requires a unified bd_info */ +#include <asm-generic/u-boot.h> +#else + typedef struct bd_info { unsigned char bi_phy_id[4]; unsigned long bi_board_number; @@ -22,6 +27,8 @@ typedef struct bd_info { #define bi_memstart bi_dram[0].start #define bi_memsize bi_dram[0].size
+#endif + /* For image.h:image_check_target_arch() */ #define IH_ARCH_DEFAULT IH_ARCH_AVR32
diff --git a/arch/avr32/lib/Makefile b/arch/avr32/lib/Makefile index 5f2d97b..9d48413 100644 --- a/arch/avr32/lib/Makefile +++ b/arch/avr32/lib/Makefile @@ -8,7 +8,10 @@ #
obj-y += memset.o +ifndef CONFIG_SYS_GENERIC_BOARD obj-y += board.o +endif obj-$(CONFIG_CMD_BOOTM) += bootm.o obj-y += interrupts.o obj-y += dram_init.o +obj-y += stack.o diff --git a/arch/avr32/lib/interrupts.c b/arch/avr32/lib/interrupts.c index bacb2d1..5f3a49e 100644 --- a/arch/avr32/lib/interrupts.c +++ b/arch/avr32/lib/interrupts.c @@ -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)); diff --git a/arch/avr32/lib/stack.c b/arch/avr32/lib/stack.c new file mode 100644 index 0000000..a98c898 --- /dev/null +++ b/arch/avr32/lib/stack.c @@ -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; +} diff --git a/common/board_f.c b/common/board_f.c index 03f1529..be6a36b 100644 --- a/common/board_f.c +++ b/common/board_f.c @@ -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) diff --git a/common/board_r.c b/common/board_r.c index 37577ab..9dc1fe4 100644 --- a/common/board_r.c +++ b/common/board_r.c @@ -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 diff --git a/include/asm-generic/u-boot.h b/include/asm-generic/u-boot.h index aef39d7..a63a87a 100644 --- a/include/asm-generic/u-boot.h +++ b/include/asm-generic/u-boot.h @@ -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 */