WIP: Initial ARMv7 architecture implementation in coreboot

The first ARMv7 CPU we're going to support is the Exynos 5250
used in the Google Snow ChromeBook.

Change-Id: I4de8433bbc6202eb8fef2556a11186a3376d411b
Signed-off-by: David Hendricks <dhendrix@chromium.org>
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-on: http://review.coreboot.org/2004
Tested-by: build bot (Jenkins)

1 files changed, 494 insertions, 0 deletions

diff --git a/src/arch/armv7/include/common.h b/src/arch/armv7/include/common.h
new file mode 100644
index 0000000000..e21cfb0239
--- /dev/null
+++ b/src/arch/armv7/include/common.h
@@ -0,0 +1,494 @@
+/*
+ * (C) Copyright 2000-2009
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef __COMMON_H_
+#define __COMMON_H_	1
+
+#undef	_LINUX_CONFIG_H
+#define _LINUX_CONFIG_H 1	/* avoid reading Linux autoconf.h file	*/
+
+#ifndef __ASSEMBLER__		/* put C only stuff in this section */
+
+typedef unsigned char		uchar;
+typedef volatile unsigned long	vu_long;
+typedef volatile unsigned short vu_short;
+typedef volatile unsigned char	vu_char;
+typedef unsigned long ulong;
+typedef unsigned int uint;
+
+//#include <config.h>
+//#include <asm-offsets.h>
+//#include <linux/bitops.h>
+//#include <linux/string.h>
+//#include <asm/ptrace.h>
+#include <types.h>
+//#include <stdarg.h>
+
+//#include <part.h>
+//#include <flash.h>
+//#include <image.h>
+
+#ifdef	DEBUG
+#define debug(fmt,args...)	printf (fmt ,##args)
+#define debugX(level,fmt,args...) if (DEBUG>=level) printf(fmt,##args);
+#else
+#define debug(fmt,args...)
+#define debugX(level,fmt,args...)
+#endif	/* DEBUG */
+
+#ifdef DEBUG
+# define _DEBUG 1
+#else
+# define _DEBUG 0
+#endif
+
+/*
+ * An assertion is run-time check done in debug mode only. If DEBUG is not
+ * defined then it is skipped. If DEBUG is defined and the assertion fails,
+ * then it calls panic*( which may or may not reset/halt U-Boot (see
+ * CONFIG_PANIC_HANG), It is hoped that all failing assertions are found
+ * before release, and after release it is hoped that they don't matter. But
+ * in any case these failing assertions cannot be fixed with a reset (which
+ * may just do the same assertion again).
+ */
+void __assert_fail(const char *assertion, const char *file, unsigned line,
+		   const char *function);
+#define assert(x) \
+	({ if (!(x) && _DEBUG) \
+		__assert_fail(#x, __FILE__, __LINE__, __func__); })
+
+#define error(fmt, args...) do {					\
+		printf("ERROR: " fmt "\nat %s:%d/%s()\n",		\
+			##args, __FILE__, __LINE__, __func__);		\
+} while (0)
+
+#ifndef BUG
+#define BUG() do { \
+	printf("BUG: failure at %s:%d/%s()!\n", __FILE__, __LINE__, __FUNCTION__); \
+	panic("BUG!"); \
+} while (0)
+#define BUG_ON(condition) do { if (unlikely((condition)!=0)) BUG(); } while(0)
+#endif /* BUG */
+
+/* Force a compilation error if condition is true */
+#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)]))
+
+typedef void (interrupt_handler_t)(void *);
+
+//#include <asm/u-boot.h> /* boot information for Linux kernel */
+#include <global_data.h>	/* global data used for startup functions */
+
+/*
+ * Return the time since boot in microseconds, This is needed for bootstage
+ * and should be defined in CPU- or board-specific code. If undefined then
+ * millisecond resolution will be used (the standard get_timer()).
+ */
+ulong timer_get_boot_us(void);
+
+/*
+ * Return the current value of a monotonically increasing microsecond timer.
+ * Granularity may be larger than 1us if hardware does not support this.
+ */
+ulong timer_get_us(void);
+
+/*
+ * General Purpose Utilities
+ */
+#if 0
+#define min(X, Y)				\
+	({ typeof (X) __x = (X);		\
+		typeof (Y) __y = (Y);		\
+		(__x < __y) ? __x : __y; })
+
+#define max(X, Y)				\
+	({ typeof (X) __x = (X);		\
+		typeof (Y) __y = (Y);		\
+		(__x > __y) ? __x : __y; })
+#define MIN(x, y)  min(x, y)
+#define MAX(x, y)  max(x, y)
+#endif
+
+/**
+ * container_of - cast a member of a structure out to the containing structure
+ * @ptr:	the pointer to the member.
+ * @type:	the type of the container struct this is embedded in.
+ * @member:	the name of the member within the struct.
+ *
+ */
+#define container_of(ptr, type, member) ({			\
+	const typeof( ((type *)0)->member ) *__mptr = (ptr);	\
+	(type *)( (char *)__mptr - offsetof(type,member) );})
+
+/*
+ * Function Prototypes
+ */
+
+void	hang		(void) __attribute__ ((noreturn));
+
+int	init_timer(void);	/* FIXME(dhendrix): used to be timer_init() */
+int	cpu_init(void);
+
+/* */
+unsigned long long initdram (int);
+int	display_options (void);
+void	print_size(unsigned long long, const char *);
+int	print_buffer (ulong addr, void* data, uint width, uint count, uint linelen);
+
+/* common/main.c */
+void	main_loop	(void);
+int	run_command	(const char *cmd, int flag);
+int	readline	(const char *const prompt);
+int	readline_into_buffer	(const char *const prompt, char * buffer);
+int	parse_line (char *, char *[]);
+void	init_cmd_timeout(void);
+void	reset_cmd_timeout(void);
+
+/* arch/$(ARCH)/lib/board.c */
+void	board_init_f  (ulong);
+//void	board_init_f  (ulong) __attribute__ ((noreturn));
+void	board_init_r  (gd_t *, ulong) __attribute__ ((noreturn));
+int	checkboard    (void);
+int	checkflash    (void);
+int	checkdram     (void);
+int	last_stage_init(void);
+extern ulong monitor_flash_len;
+int mac_read_from_eeprom(void);
+
+#ifdef CONFIG_ARM
+# include <asm/mach-types.h>
+# include <asm/setup.h>
+# include <asm/u-boot-arm.h>	/* ARM version to be fixed! */
+#endif /* CONFIG_ARM */
+
+int	misc_init_f   (void);
+int	misc_init_r   (void);
+
+/* common/exports.c */
+void	jumptable_init(void);
+
+/* common/kallsysm.c */
+const char *symbol_lookup(unsigned long addr, unsigned long *caddr);
+
+/* api/api.c */
+void	api_init (void);
+
+/* common/memsize.c */
+long	get_ram_size  (long *, long);
+
+/* $(BOARD)/$(BOARD).c */
+void	reset_phy     (void);
+void	fdc_hw_init   (void);
+
+/* $(BOARD)/eeprom.c */
+void eeprom_init  (void);
+#ifndef CONFIG_SPI
+int  eeprom_probe (unsigned dev_addr, unsigned offset);
+#endif
+int  eeprom_read  (unsigned dev_addr, unsigned offset, uchar *buffer, unsigned cnt);
+int  eeprom_write (unsigned dev_addr, unsigned offset, uchar *buffer, unsigned cnt);
+
+/*
+ * Set this up regardless of board
+ * type, to prevent errors.
+ */
+#if defined(CONFIG_SPI) || !defined(CONFIG_SYS_I2C_EEPROM_ADDR)
+# define CONFIG_SYS_DEF_EEPROM_ADDR 0
+#else
+#if !defined(CONFIG_ENV_EEPROM_IS_ON_I2C)
+# define CONFIG_SYS_DEF_EEPROM_ADDR CONFIG_SYS_I2C_EEPROM_ADDR
+#endif
+#endif /* CONFIG_SPI || !defined(CONFIG_SYS_I2C_EEPROM_ADDR) */
+
+#if defined(CONFIG_SPI)
+extern void spi_init_f (void);
+extern void spi_init_r (void);
+extern ssize_t spi_read	 (uchar *, int, uchar *, int);
+extern ssize_t spi_write (uchar *, int, uchar *, int);
+#endif
+
+/* $(BOARD)/$(BOARD).c */
+int board_early_init_f (void);
+int board_late_init (void);
+int board_postclk_init (void); /* after clocks/timebase, before env/serial */
+int board_early_init_r (void);
+void board_poweroff (void);
+
+#if defined(CONFIG_SYS_DRAM_TEST)
+int testdram(void);
+#endif /* CONFIG_SYS_DRAM_TEST */
+
+/* $(CPU)/start.S */
+#if defined(CONFIG_5xx) || \
+    defined(CONFIG_8xx)
+uint	get_immr      (uint);
+#endif
+uint	get_pir	      (void);
+#if defined(CONFIG_MPC5xxx)
+uint	get_svr       (void);
+#endif
+uint	get_pvr	      (void);
+uint	get_svr	      (void);
+uint	rd_ic_cst     (void);
+void	wr_ic_cst     (uint);
+void	wr_ic_adr     (uint);
+uint	rd_dc_cst     (void);
+void	wr_dc_cst     (uint);
+void	wr_dc_adr     (uint);
+int	icache_status (void);
+void	icache_enable (void);
+void	icache_disable(void);
+int	dcache_status (void);
+void	dcache_enable (void);
+void	dcache_disable(void);
+void	mmu_disable(void);
+void	relocate_code (ulong, gd_t *, ulong) __attribute__ ((noreturn));
+ulong	get_endaddr   (void);
+void	trap_init     (ulong);
+#if defined (CONFIG_4xx)	|| \
+    defined (CONFIG_MPC5xxx)	|| \
+    defined (CONFIG_74xx_7xx)	|| \
+    defined (CONFIG_74x)	|| \
+    defined (CONFIG_75x)	|| \
+    defined (CONFIG_74xx)	|| \
+    defined (CONFIG_MPC8220)	|| \
+    defined (CONFIG_MPC85xx)	|| \
+    defined (CONFIG_MPC86xx)	|| \
+    defined (CONFIG_MPC83xx)
+unsigned char	in8(unsigned int);
+void		out8(unsigned int, unsigned char);
+unsigned short	in16(unsigned int);
+unsigned short	in16r(unsigned int);
+void		out16(unsigned int, unsigned short value);
+void		out16r(unsigned int, unsigned short value);
+unsigned long	in32(unsigned int);
+unsigned long	in32r(unsigned int);
+void		out32(unsigned int, unsigned long value);
+void		out32r(unsigned int, unsigned long value);
+void		ppcDcbf(unsigned long value);
+void		ppcDcbi(unsigned long value);
+void		ppcSync(void);
+void		ppcDcbz(unsigned long value);
+#endif
+
+/* $(CPU)/cpu.c */
+static inline int cpumask_next(int cpu, unsigned int mask)
+{
+	for (cpu++; !((1 << cpu) & mask); cpu++)
+		;
+
+	return cpu;
+}
+
+#define for_each_cpu(iter, cpu, num_cpus, mask) \
+	for (iter = 0, cpu = cpumask_next(-1, mask); \
+		iter < num_cpus; \
+		iter++, cpu = cpumask_next(cpu, mask)) \
+
+int	cpu_numcores  (void);
+u32	cpu_mask      (void);
+int	is_core_valid (unsigned int);
+int	probecpu      (void);
+int	checkcpu      (void);
+int	checkicache   (void);
+int	checkdcache   (void);
+void	upmconfig     (unsigned int, unsigned int *, unsigned int);
+ulong	get_tbclk     (void);
+void	reset_cpu     (ulong addr);
+#if defined (CONFIG_OF_LIBFDT) && defined (CONFIG_OF_BOARD_SETUP)
+void ft_cpu_setup(void *blob, bd_t *bd);
+#endif
+
+
+/* $(CPU)/serial.c */
+int	serial_init   (void);
+void	serial_setbrg (void);
+void	serial_putc   (const char);
+void	serial_putc_raw(const char);
+void	serial_puts   (const char *);
+int	serial_getc   (void);
+int	serial_tstc   (void);
+
+void	_serial_setbrg (const int);
+void	_serial_putc   (const char, const int);
+void	_serial_putc_raw(const char, const int);
+void	_serial_puts   (const char *, const int);
+int	_serial_getc   (const int);
+int	_serial_tstc   (const int);
+
+/* $(CPU)/speed.c */
+int	get_clocks (void);
+int	get_clocks_866 (void);
+int	sdram_adjust_866 (void);
+int	adjust_sdram_tbs_8xx (void);
+#if defined(CONFIG_8260)
+int	prt_8260_clks (void);
+#elif defined(CONFIG_MPC5xxx)
+int	prt_mpc5xxx_clks (void);
+#endif
+#if defined(CONFIG_MPC512X)
+int	prt_mpc512xxx_clks (void);
+#endif
+#if defined(CONFIG_MPC8220)
+int	prt_mpc8220_clks (void);
+#endif
+#ifdef CONFIG_4xx
+ulong	get_OPB_freq (void);
+ulong	get_PCI_freq (void);
+#endif
+#if defined(CONFIG_S3C24X0) || \
+    defined(CONFIG_LH7A40X) || \
+    defined(CONFIG_S3C6400) || \
+    defined(CONFIG_EP93XX)
+ulong	get_FCLK (void);
+ulong	get_HCLK (void);
+ulong	get_PCLK (void);
+ulong	get_UCLK (void);
+#endif
+#if defined(CONFIG_LH7A40X)
+ulong	get_PLLCLK (void);
+#endif
+#if defined CONFIG_INCA_IP
+uint	incaip_get_cpuclk (void);
+#endif
+#if defined(CONFIG_IMX)
+ulong get_systemPLLCLK(void);
+ulong get_FCLK(void);
+ulong get_HCLK(void);
+ulong get_BCLK(void);
+ulong get_PERCLK1(void);
+ulong get_PERCLK2(void);
+ulong get_PERCLK3(void);
+#endif
+ulong	get_bus_freq  (ulong);
+int get_serial_clock(void);
+
+struct pt_regs;
+/* $(CPU)/interrupts.c */
+int	interrupt_init	   (void);
+void	timer_interrupt	   (struct pt_regs *);
+void	external_interrupt (struct pt_regs *);
+void	irq_install_handler(int, interrupt_handler_t *, void *);
+void	irq_free_handler   (int);
+void	reset_timer	   (void);
+ulong	get_timer	   (ulong base);
+void	enable_interrupts  (void);
+int	disable_interrupts (void);
+
+/* $(CPU)/.../commproc.c */
+int	dpram_init (void);
+uint	dpram_base(void);
+uint	dpram_base_align(uint align);
+uint	dpram_alloc(uint size);
+uint	dpram_alloc_align(uint size,uint align);
+void	bootcount_store (ulong);
+ulong	bootcount_load (void);
+#define BOOTCOUNT_MAGIC		0xB001C041
+
+/* $(CPU)/.../<eth> */
+void mii_init (void);
+
+/* $(CPU)/.../lcd.c */
+ulong	lcd_setmem (ulong);
+
+/* $(CPU)/.../video.c */
+ulong	video_setmem (ulong);
+
+/* arch/$(ARCH)/lib/cache.c */
+ulong	dcache_get_line_size(void);
+void	enable_caches(void);
+void	flush_cache   (unsigned long, unsigned long);
+void	flush_dcache_all(void);
+void	flush_dcache_range(unsigned long start, unsigned long stop);
+void	invalidate_dcache_range(unsigned long start, unsigned long stop);
+void	invalidate_dcache_all(void);
+void	invalidate_icache_all(void);
+
+/* arch/$(ARCH)/lib/ticks.S */
+unsigned long long get_ticks(void);
+void	wait_ticks    (unsigned long);
+
+/* arch/$(ARCH)/lib/time.c */
+void	__udelay      (unsigned long);
+ulong	usec2ticks    (unsigned long usec);
+ulong	ticks2usec    (unsigned long ticks);
+int	init_timebase (void);
+
+/* lib/qsort.c */
+void qsort(void *base, size_t nmemb, size_t size,
+	   int(*compar)(const void *, const void *));
+int strcmp_compar(const void *, const void *);
+
+/* lib/time.c */
+void	udelay        (unsigned long);
+
+#if 0
+/* lib/vsprintf.c */
+ulong	simple_strtoul(const char *cp,char **endp,unsigned int base);
+int strict_strtoul(const char *cp, unsigned int base, unsigned long *res);
+unsigned long long	simple_strtoull(const char *cp,char **endp,unsigned int base);
+long	simple_strtol(const char *cp,char **endp,unsigned int base);
+void	panic(const char *fmt, ...)
+		__attribute__ ((format (__printf__, 1, 2), noreturn));
+int	sprintf(char * buf, const char *fmt, ...)
+		__attribute__ ((format (__printf__, 2, 3)));
+int	vsprintf(char *buf, const char *fmt, va_list args);
+#endif
+
+/* lib/strmhz.c */
+char *	strmhz(char *buf, unsigned long hz);
+
+/* Multicore arch functions */
+#ifdef CONFIG_MP
+int cpu_status(int nr);
+int cpu_reset(int nr);
+int cpu_disable(int nr);
+int cpu_release(int nr, int argc, char * const argv[]);
+#endif
+
+#endif /* __ASSEMBLER__ */
+
+/* Put only stuff here that the assembler can digest */
+
+#ifdef CONFIG_POST
+#define CONFIG_HAS_POST
+#ifndef CONFIG_POST_ALT_LIST
+#define CONFIG_POST_STD_LIST
+#endif
+#endif
+
+#ifdef CONFIG_INIT_CRITICAL
+#error CONFIG_INIT_CRITICAL is deprecated!
+#error Read section CONFIG_SKIP_LOWLEVEL_INIT in README.
+#endif
+
+//#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
+
+#define ROUND(a,b)		(((a) + (b) - 1) & ~((b) - 1))
+#define DIV_ROUND(n,d)		(((n) + ((d)/2)) / (d))
+#define DIV_ROUND_UP(n,d)	(((n) + (d) - 1) / (d))
+#define roundup(x, y)		((((x) + ((y) - 1)) / (y)) * (y))
+
+//#define ALIGN(x,a)		__ALIGN_MASK((x),(typeof(x))(a)-1)
+#define __ALIGN_MASK(x,mask)	(((x)+(mask))&~(mask))
+
+#endif	/* __COMMON_H_ */