Merge branch 'master' of git://git.denx.de/u-boot-avr32

arch/arm/lib/Makefile

@@ -35,6 +35,7 @@ endif
 obj-$(CONFIG_SEMIHOSTING) += semihosting.o
 
 obj-y	+= sections.o
+obj-y	+= stack.o
 ifdef CONFIG_ARM64
 obj-y	+= gic_64.o
 obj-y	+= interrupts_64.o

arch/arm/lib/stack.c

+/*
+ * Copyright (c) 2015 Andreas Bießmann <andreas.devel@googlemail.com>
+ *
+ * Copyright (c) 2011 The Chromium OS Authors.
+ * (C) Copyright 2002-2006
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+#include <common.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int arch_reserve_stacks(void)
+{
+#ifdef CONFIG_SPL_BUILD
+	gd->start_addr_sp -= 128;	/* leave 32 words for abort-stack */
+	gd->irq_sp = gd->start_addr_sp;
+#else
+	/* setup stack pointer for exceptions */
+	gd->irq_sp = gd->start_addr_sp;
+
+# if !defined(CONFIG_ARM64)
+#  ifdef CONFIG_USE_IRQ
+	gd->start_addr_sp -= (CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ);
+	debug("Reserving %zu Bytes for IRQ stack at: %08lx\n",
+	      CONFIG_STACKSIZE_IRQ + CONFIG_STACKSIZE_FIQ, gd->start_addr_sp);
+
+	/* 8-byte alignment for ARM ABI compliance */
+	gd->start_addr_sp &= ~0x07;
+#  endif
+	/* leave 3 words for abort-stack, plus 1 for alignment */
+	gd->start_addr_sp -= 16;
+# endif
+#endif
+
+	return 0;
+}

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

arch/avr32/cpu/Makefile

@@ -16,5 +16,6 @@ obj-y			+= cache.o
 obj-y			+= interrupts.o
 obj-$(CONFIG_PORTMUX_PIO) += portmux-pio.o
 obj-$(CONFIG_PORTMUX_GPIO) += portmux-gpio.o
+obj-y += mmc.o
 
 obj-$(if $(filter at32ap700x,$(SOC)),y) += at32ap700x/

arch/avr32/cpu/at32ap700x/mmu.c

@@ -7,7 +7,7 @@ void mmu_init_r(unsigned long dest_addr)
 	uintptr_t	vmr_table_addr;
 
 	/* Round monitor address down to the nearest page boundary */
-	dest_addr &= PAGE_ADDR_MASK;
+	dest_addr &= MMU_PAGE_ADDR_MASK;
 
 	/* Initialize TLB entry 0 to cover the monitor, and lock it */
 	sysreg_write(TLBEHI, dest_addr | SYSREG_BIT(TLBEHI_V));
@@ -36,7 +36,7 @@ int mmu_handle_tlb_miss(void)
 	unsigned int fault_pgno;
 	int first, last;
 
-	fault_pgno = sysreg_read(TLBEAR) >> PAGE_SHIFT;
+	fault_pgno = sysreg_read(TLBEAR) >> MMU_PAGE_SHIFT;
 	vmr_table = (const struct mmu_vm_range *)sysreg_read(PTBR);
 
 	/* Do a binary search through the VM ranges */
@@ -60,8 +60,8 @@ int mmu_handle_tlb_miss(void)
 			/* Got it; let's slam it into the TLB */
 			uint32_t tlbelo;
 
-			tlbelo = vmr->phys & ~PAGE_ADDR_MASK;
-			tlbelo |= fault_pgno << PAGE_SHIFT;
+			tlbelo = vmr->phys & ~MMU_PAGE_ADDR_MASK;
+			tlbelo |= fault_pgno << MMU_PAGE_SHIFT;
 			sysreg_write(TLBELO, tlbelo);
 			__builtin_tlbw();
 

arch/avr32/cpu/cpu.c

@@ -27,7 +27,7 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-int cpu_init(void)
+int arch_cpu_init(void)
 {
 	extern void _evba(void);
 

arch/avr32/cpu/exception.c

@@ -96,11 +96,11 @@ void do_unknown_exception(unsigned int ecr, struct pt_regs *regs)
 	printf("CPU Mode: %s\n", cpu_modes[mode]);
 
 	/* Avoid exception loops */
-	if (regs->sp < (gd->arch.stack_end - CONFIG_STACKSIZE)
-			|| regs->sp >= gd->arch.stack_end)
+	if (regs->sp < (gd->start_addr_sp - CONFIG_STACKSIZE) ||
+	    regs->sp >= gd->start_addr_sp)
 		printf("\nStack pointer seems bogus, won't do stack dump\n");
 	else
-		dump_mem("\nStack: ", regs->sp, gd->arch.stack_end);
+		dump_mem("\nStack: ", regs->sp, gd->start_addr_sp);
 
 	panic("Unhandled exception\n");
 }

arch/avr32/cpu/mmc.c

+/*
+ * Copyright (C) 2004-2006 Atmel Corporation
+ * Copyright (C) 2015 Andreas Bießmann <andreas.devel@googlmail.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+#include <common.h>
+#include <atmel_mci.h>
+#include <asm/arch/hardware.h>
+
+/* provide cpu_mmc_init, to overwrite provide board_mmc_init */
+int cpu_mmc_init(bd_t *bd)
+{
+	/* This calls the atmel_mci_init in gen_atmel_mci.c */
+	return atmel_mci_init((void *)ATMEL_BASE_MMCI);
+}

arch/avr32/cpu/u-boot.lds

@@ -48,9 +48,11 @@ SECTIONS
 	_edata = .;
 
 	.bss (NOLOAD) : {
+		__bss_start = .;
 		*(.bss)
 		*(.bss.*)
 	}
 	. = ALIGN(8);
 	__bss_end = .;
+	__init_end = .;
 }

arch/avr32/include/asm/arch-at32ap700x/mmu.h

@@ -13,9 +13,9 @@
 
 #include <asm/sysreg.h>
 
-#define PAGE_SHIFT	20
-#define PAGE_SIZE	(1UL << PAGE_SHIFT)
-#define PAGE_ADDR_MASK	(~(PAGE_SIZE - 1))
+#define MMU_PAGE_SHIFT	20
+#define MMU_PAGE_SIZE	(1UL << MMU_PAGE_SHIFT)
+#define MMU_PAGE_ADDR_MASK	(~(MMU_PAGE_SIZE - 1))
 
 #define MMU_VMR_CACHE_NONE						\
 	(SYSREG_BF(AP, 3) | SYSREG_BF(SZ, 3) | SYSREG_BIT(TLBELO_D))

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

arch/avr32/include/asm/dma-mapping.h

@@ -14,7 +14,12 @@ enum dma_data_direction {
 	DMA_TO_DEVICE		= 1,
 	DMA_FROM_DEVICE		= 2,
 };
-extern void *dma_alloc_coherent(size_t len, unsigned long *handle);
+
+static inline void *dma_alloc_coherent(size_t len, unsigned long *handle)
+{
+	*handle = (unsigned long)memalign(ARCH_DMA_MINALIGN, len);
+	return (void *)*handle;
+}
 
 static inline unsigned long dma_map_single(volatile void *vaddr, size_t len,
 					   enum dma_data_direction dir)

arch/avr32/include/asm/global_data.h

@@ -8,7 +8,6 @@
 
 /* Architecture-specific global data */
 struct arch_global_data {
-	unsigned long stack_end;	/* highest stack address */
 	unsigned long cpu_hz;		/* cpu core clock frequency */
 };
 

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;
@@ -22,7 +27,12 @@ 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
 
+int arch_cpu_init(void);
+int dram_init(void);
+
 #endif /* __ASM_U_BOOT_H__ */

arch/avr32/lib/Makefile

@@ -8,6 +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

arch/avr32/lib/board.c

@@ -9,7 +9,6 @@
 #include <stdio_dev.h>
 #include <version.h>
 #include <net.h>
-#include <atmel_mci.h>
 
 #ifdef CONFIG_BITBANGMII
 #include <miiphy.h>
@@ -30,6 +29,12 @@ DECLARE_GLOBAL_DATA_PTR;
 
 unsigned long monitor_flash_len;
 
+__weak void dram_init_banksize(void)
+{
+	gd->bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
+	gd->bd->bi_dram[0].size =  gd->ram_size;
+}
+
 /* Weak aliases for optional board functions */
 static int __do_nothing(void)
 {
@@ -38,57 +43,6 @@ static int __do_nothing(void)
 int board_postclk_init(void) __attribute__((weak, alias("__do_nothing")));
 int board_early_init_r(void) __attribute__((weak, alias("__do_nothing")));
 
-/* provide cpu_mmc_init, to overwrite provide board_mmc_init */
-int cpu_mmc_init(bd_t *bd)
-{
-	/* This calls the atmel_mci_init in gen_atmel_mci.c */
-	return atmel_mci_init((void *)ATMEL_BASE_MMCI);
-}
-
-#ifdef CONFIG_SYS_DMA_ALLOC_LEN
-#include <asm/arch/cacheflush.h>
-#include <asm/io.h>
-
-static unsigned long dma_alloc_start;
-static unsigned long dma_alloc_end;
-static unsigned long dma_alloc_brk;
-
-static void dma_alloc_init(void)
-{
-	unsigned long monitor_addr;
-
-	monitor_addr = CONFIG_SYS_MONITOR_BASE + gd->reloc_off;
-	dma_alloc_end = monitor_addr - CONFIG_SYS_MALLOC_LEN;
-	dma_alloc_start = dma_alloc_end - CONFIG_SYS_DMA_ALLOC_LEN;
-	dma_alloc_brk = dma_alloc_start;
-
-	printf("DMA: Using memory from 0x%08lx to 0x%08lx\n",
-	       dma_alloc_start, dma_alloc_end);
-
-	invalidate_dcache_range((unsigned long)cached(dma_alloc_start),
-				dma_alloc_end);
-}
-
-void *dma_alloc_coherent(size_t len, unsigned long *handle)
-{
-	unsigned long paddr = dma_alloc_brk;
-
-	if (dma_alloc_brk + len > dma_alloc_end)
-		return NULL;
-
-	dma_alloc_brk = ((paddr + len + CONFIG_SYS_DCACHE_LINESZ - 1)
-			 & ~(CONFIG_SYS_DCACHE_LINESZ - 1));
-
-	*handle = paddr;
-	return uncached(paddr);
-}
-#else
-static inline void dma_alloc_init(void)
-{
-
-}
-#endif
-
 static int init_baudrate(void)
 {
 	gd->baudrate = getenv_ulong("baudrate", 10, CONFIG_BAUDRATE);
@@ -134,7 +88,6 @@ void board_init_f(ulong board_type)
 	unsigned long monitor_len;
 	unsigned long monitor_addr;
 	unsigned long addr;
-	long sdram_size;
 
 	/* Initialize the global data pointer */
 	memset(&gd_data, 0, sizeof(gd_data));
@@ -142,17 +95,17 @@ void board_init_f(ulong board_type)
 
 	/* Perform initialization sequence */
 	board_early_init_f();
-	cpu_init();
+	arch_cpu_init();
 	board_postclk_init();
 	env_init();
 	init_baudrate();
 	serial_init();
 	console_init_f();
 	display_banner();
-	sdram_size = initdram(board_type);
+	dram_init();
 
 	/* If we have no SDRAM, we can't go on */
-	if (sdram_size <= 0)
+	if (gd->ram_size <= 0)
 		panic("No working SDRAM available\n");
 
 	/*
@@ -166,7 +119,7 @@ void board_init_f(ulong board_type)
 	 *  - global data struct
 	 *  - stack
 	 */
-	addr = CONFIG_SYS_SDRAM_BASE + sdram_size;
+	addr = CONFIG_SYS_SDRAM_BASE + gd->ram_size;
 	monitor_len = (char *)(&__bss_end) - _text;
 
 	/*
@@ -180,12 +133,6 @@ void board_init_f(ulong board_type)
 	/* Reserve memory for malloc() */
 	addr -= CONFIG_SYS_MALLOC_LEN;
 
-#ifdef CONFIG_SYS_DMA_ALLOC_LEN
-	/* Reserve DMA memory (must be cache aligned) */
-	addr &= ~(CONFIG_SYS_DCACHE_LINESZ - 1);
-	addr -= CONFIG_SYS_DMA_ALLOC_LEN;
-#endif
-
 #ifdef CONFIG_LCD
 #ifdef CONFIG_FB_ADDR
 	printf("LCD: Frame buffer allocated at preset 0x%08x\n",
@@ -210,16 +157,11 @@ void board_init_f(ulong board_type)
 
 	/* And finally, a new, bigger stack. */
 	new_sp = (unsigned long *)addr;
-	gd->arch.stack_end = addr;
+	gd->start_addr_sp = addr;
 	*(--new_sp) = 0;
 	*(--new_sp) = 0;
 
-	/*
-	 * Initialize the board information struct with the
-	 * information we have.
-	 */
-	bd->bi_dram[0].start = CONFIG_SYS_SDRAM_BASE;
-	bd->bi_dram[0].size = sdram_size;
+	dram_init_banksize();
 
 	memcpy(new_gd, gd, sizeof(gd_t));
 
@@ -264,7 +206,6 @@ void board_init_r(gd_t *new_gd, ulong dest_addr)
 	/* The malloc area is right below the monitor image in RAM */
 	mem_malloc_init(CONFIG_SYS_MONITOR_BASE + gd->reloc_off -
 			CONFIG_SYS_MALLOC_LEN, CONFIG_SYS_MALLOC_LEN);
-	dma_alloc_init();
 
 	enable_interrupts();
 

arch/avr32/lib/dram_init.c

+/*
+ * Copyright (C) 2015 Andreas Bießmann <andreas.devel@googlemail.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+#include <common.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int dram_init(void)
+{
+	/* check for the maximum amount of memory possible on AP7000 devices */
+	gd->ram_size = get_ram_size(
+		(void *)CONFIG_SYS_SDRAM_BASE,
+		(256<<20));
+	return 0;
+}

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));

arch/powerpc/lib/Makefile

@@ -40,6 +40,7 @@ obj-y	+= extable.o
 obj-y	+= interrupts.o
 obj-$(CONFIG_CMD_KGDB) += kgdb.o
 obj-$(CONFIG_CMD_IDE) += ide.o
+obj-y	+= stack.o
 obj-y	+= time.o
 
 # Don't include the MPC5xxx special memcpy into the

arch/powerpc/lib/stack.c

+/*
+ * Copyright (c) 2015 Andreas Bießmann <andreas.devel@googlemail.com>
+ *
+ * Copyright (c) 2011 The Chromium OS Authors.
+ * (C) Copyright 2002-2006
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+#include <common.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int arch_reserve_stacks(void)
+{
+	ulong *s;
+
+	/* setup stack pointer for exceptions */
+	gd->irq_sp = gd->start_addr_sp;
+
+	/* Clear initial stack frame */
+	s = (ulong *)gd->start_addr_sp;
+	*s = 0; /* Terminate back chain */
+	*++s = 0; /* NULL return address */
+
+	return 0;
+}