[U-Boot] [PATCH v3 10/12] avr32: add generic board support
Andreas Bießmann
andreas.devel at googlemail.com
Fri Feb 6 23:06:48 CET 2015
Signed-off-by: Andreas Bießmann <andreas.devel at 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 v3:
- remove unnecessary stack implementation for avr32
- fix bdinfo output
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 | 2 ++
arch/avr32/lib/interrupts.c | 5 +++++
common/board_f.c | 2 +-
common/board_r.c | 13 ++++++++++---
common/cmd_bdinfo.c | 4 ++--
include/asm-generic/u-boot.h | 4 ++++
10 files changed, 37 insertions(+), 6 deletions(-)
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 ($(CROSS_COMPILE),)
CROSS_COMPILE := avr32-linux-
endif
+# avr32 has generic board support
+__HAVE_ARCH_GENERIC_BOARD := y
+
CONFIG_STANDALONE_LOAD_ADDR ?= 0x00000000
PLATFORM_RELFLAGS += -ffixed-r5 -fPIC -mno-init-got -mrelax
diff --git a/arch/avr32/cpu/u-boot.lds b/arch/avr32/cpu/u-boot.lds
index cb29a22..b0180e3 100644
--- a/arch/avr32/cpu/u-boot.lds
+++ b/arch/avr32/cpu/u-boot.lds
@@ -48,9 +48,11 @@ SECTIONS
_edata = .;
.bss (NOLOAD) : {
+ __bss_start = .;
*(.bss)
*(.bss.*)
}
. = ALIGN(8);
__bss_end = .;
+ __init_end = .;
}
diff --git a/arch/avr32/include/asm/config.h b/arch/avr32/include/asm/config.h
index 63056a4..529fe22 100644
--- a/arch/avr32/include/asm/config.h
+++ b/arch/avr32/include/asm/config.h
@@ -8,5 +8,6 @@
#define _ASM_CONFIG_H_
#define CONFIG_NEEDS_MANUAL_RELOC
+#define CONFIG_SYS_GENERIC_GLOBAL_DATA
#endif
diff --git a/arch/avr32/include/asm/u-boot.h b/arch/avr32/include/asm/u-boot.h
index 232350e..8b047ec 100644
--- a/arch/avr32/include/asm/u-boot.h
+++ b/arch/avr32/include/asm/u-boot.h
@@ -6,6 +6,11 @@
#ifndef __ASM_U_BOOT_H__
#define __ASM_U_BOOT_H__ 1
+#ifdef CONFIG_SYS_GENERIC_BOARD
+/* Use the generic board which requires a unified bd_info */
+#include <asm-generic/u-boot.h>
+#else
+
typedef struct bd_info {
unsigned char bi_phy_id[4];
unsigned long bi_board_number;
@@ -22,6 +27,8 @@ typedef struct bd_info {
#define bi_memstart bi_dram[0].start
#define bi_memsize bi_dram[0].size
+#endif
+
/* For image.h:image_check_target_arch() */
#define IH_ARCH_DEFAULT IH_ARCH_AVR32
diff --git a/arch/avr32/lib/Makefile b/arch/avr32/lib/Makefile
index 5f2d97b..6750913 100644
--- a/arch/avr32/lib/Makefile
+++ b/arch/avr32/lib/Makefile
@@ -8,7 +8,9 @@
#
obj-y += memset.o
+ifndef CONFIG_SYS_GENERIC_BOARD
obj-y += board.o
+endif
obj-$(CONFIG_CMD_BOOTM) += bootm.o
obj-y += interrupts.o
obj-y += dram_init.o
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/common/board_f.c b/common/board_f.c
index b5e1071..afa3c02 100644
--- a/common/board_f.c
+++ b/common/board_f.c
@@ -883,7 +883,7 @@ 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 8e1e9e0..550d863 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;
@@ -498,7 +501,7 @@ static int initr_api(void)
#endif
/* enable exceptions */
-#ifdef CONFIG_ARM
+#if defined(CONFIG_ARM) || defined(CONFIG_AVR32)
static int initr_enable_interrupts(void)
{
enable_interrupts();
@@ -825,10 +828,10 @@ 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)
@@ -893,6 +896,10 @@ 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/common/cmd_bdinfo.c b/common/cmd_bdinfo.c
index e6d8a7a..999d026 100644
--- a/common/cmd_bdinfo.c
+++ b/common/cmd_bdinfo.c
@@ -333,8 +333,8 @@ int do_bdinfo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
bd_t *bd = gd->bd;
print_num("boot_params", (ulong)bd->bi_boot_params);
- print_num("memstart", (ulong)bd->bi_memstart);
- print_lnum("memsize", (u64)bd->bi_memsize);
+ print_num("memstart", (ulong)bd->bi_dram[0].start);
+ print_lnum("memsize", (u64)bd->bi_dram[0].size);
print_num("flashstart", (ulong)bd->bi_flashstart);
print_num("flashsize", (ulong)bd->bi_flashsize);
print_num("flashoffset", (ulong)bd->bi_flashoffset);
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 */
--
1.7.10.4
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