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

This commit is contained in:
Tom Rini 2015-01-22 09:52:19 -05:00
parent 9d86c8dc96 e520023882
commit 1d6a95011f
9 changed files with 206 additions and 123 deletions
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45
arch/mips/Kconfig
View File

@ -29,6 +29,7 @@ config TARGET_MALTA
select SUPPORTS_LITTLE_ENDIAN
select SUPPORTS_CPU_MIPS32_R1
select SUPPORTS_CPU_MIPS32_R2
select SWAP_IO_SPACE
config TARGET_VCT
bool "Support vct"
@ -116,6 +117,39 @@ config CPU_MIPS64_R2
endchoice
menu "OS boot interface"
config MIPS_BOOT_CMDLINE_LEGACY
bool "Hand over legacy command line to Linux kernel"
default y
help
Enable this option if you want U-Boot to hand over the Yamon-style
command line to the kernel. All bootargs will be prepared as argc/argv
compatible list. The argument count (argc) is stored in register $a0.
The address of the argument list (argv) is stored in register $a1.
config MIPS_BOOT_ENV_LEGACY
bool "Hand over legacy environment to Linux kernel"
default y
help
Enable this option if you want U-Boot to hand over the Yamon-style
environment to the kernel. Information like memory size, initrd
address and size will be prepared as zero-terminated key/value list.
The address of the enviroment is stored in register $a2.
config MIPS_BOOT_FDT
bool "Hand over a flattened device tree to Linux kernel (INCOMPLETE)"
default n
help
Enable this option if you want U-Boot to hand over a flattened
device tree to the kernel.
Note: the final hand over to the kernel is not yet implemented. After
the community agreed on the MIPS boot interface for device trees,
the corresponding code will be added.
endmenu
config SUPPORTS_BIG_ENDIAN
bool
@ -134,12 +168,23 @@ config SUPPORTS_CPU_MIPS64_R1
config SUPPORTS_CPU_MIPS64_R2
bool
config CPU_MIPS32
bool
default y if CPU_MIPS32_R1 || CPU_MIPS32_R2
config CPU_MIPS64
bool
default y if CPU_MIPS64_R1 || CPU_MIPS64_R2
config 32BIT
bool
config 64BIT
bool
config SWAP_IO_SPACE
bool
endif
endmenu

6
arch/mips/Makefile
View File

@ -2,7 +2,9 @@
# SPDX-License-Identifier: GPL-2.0+
#
head-y := arch/mips/cpu/$(CPU)/start.o
head-$(CONFIG_CPU_MIPS32) := arch/mips/cpu/mips32/start.o
head-$(CONFIG_CPU_MIPS64) := arch/mips/cpu/mips64/start.o
libs-y += arch/mips/cpu/$(CPU)/
libs-$(CONFIG_CPU_MIPS32) += arch/mips/cpu/mips32/
libs-$(CONFIG_CPU_MIPS64) += arch/mips/cpu/mips64/
libs-y += arch/mips/lib/

29
arch/mips/cpu/mips32/start.S
View File

@ -15,6 +15,11 @@
#define CONFIG_SYS_MIPS_CACHE_MODE CONF_CM_CACHABLE_NONCOHERENT
#endif
#ifndef CONFIG_SYS_INIT_SP_ADDR
#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_SDRAM_BASE + \
CONFIG_SYS_INIT_SP_OFFSET)
#endif
/*
* For the moment disable interrupts, mark the kernel mode and
* set ST0_KX so that the CPU does not spit fire when using
@ -135,9 +140,31 @@ reset:
#endif
/* Set up temporary stack */
li sp, CONFIG_SYS_SDRAM_BASE + CONFIG_SYS_INIT_SP_OFFSET
li t0, -16
li t1, CONFIG_SYS_INIT_SP_ADDR
and sp, t1, t0 # force 16 byte alignment
sub sp, sp, GD_SIZE # reserve space for gd
and sp, sp, t0 # force 16 byte alignment
move k0, sp # save gd pointer
#ifdef CONFIG_SYS_MALLOC_F_LEN
li t2, CONFIG_SYS_MALLOC_F_LEN
sub sp, sp, t2 # reserve space for early malloc
and sp, sp, t0 # force 16 byte alignment
#endif
move fp, sp
/* Clear gd */
move t0, k0
1:
sw zero, 0(t0)
blt t0, t1, 1b
addi t0, 4
#ifdef CONFIG_SYS_MALLOC_F_LEN
addu t0, k0, GD_MALLOC_BASE # gd->malloc_base offset
sw sp, 0(t0)
#endif
la t9, board_init_f
jr t9
move ra, zero

59
arch/mips/cpu/mips32/time.c
View File

@ -8,63 +8,12 @@
#include <common.h>
#include <asm/mipsregs.h>
static unsigned long timestamp;
/* how many counter cycles in a jiffy */
#define CYCLES_PER_JIFFY \
(CONFIG_SYS_MIPS_TIMER_FREQ + CONFIG_SYS_HZ / 2) / CONFIG_SYS_HZ
/*
* timer without interrupts
*/
int timer_init(void)
unsigned long notrace timer_read_counter(void)
{
/* Set up the timer for the first expiration. */
write_c0_compare(read_c0_count() + CYCLES_PER_JIFFY);
return 0;
return read_c0_count();
}
ulong get_timer(ulong base)
ulong notrace get_tbclk(void)
{
unsigned int count;
unsigned int expirelo = read_c0_compare();
/* Check to see if we have missed any timestamps. */
count = read_c0_count();
while ((count - expirelo) < 0x7fffffff) {
expirelo += CYCLES_PER_JIFFY;
timestamp++;
}
write_c0_compare(expirelo);
return timestamp - base;
}
void __udelay(unsigned long usec)
{
unsigned int tmo;
tmo = read_c0_count() + (usec * (CONFIG_SYS_MIPS_TIMER_FREQ / 1000000));
while ((tmo - read_c0_count()) < 0x7fffffff)
/*NOP*/;
}
/*
* This function is derived from PowerPC code (read timebase as long long).
* On MIPS it just returns the timer value.
*/
unsigned long long get_ticks(void)
{
return get_timer(0);
}
/*
* This function is derived from PowerPC code (timebase clock frequency).
* On MIPS it returns the number of timer ticks per second.
*/
ulong get_tbclk(void)
{
return CONFIG_SYS_HZ;
return CONFIG_SYS_MIPS_TIMER_FREQ;
}

29
arch/mips/cpu/mips64/start.S
View File

@ -15,6 +15,11 @@
#define CONFIG_SYS_MIPS_CACHE_MODE CONF_CM_CACHABLE_NONCOHERENT
#endif
#ifndef CONFIG_SYS_INIT_SP_ADDR
#define CONFIG_SYS_INIT_SP_ADDR (CONFIG_SYS_SDRAM_BASE + \
CONFIG_SYS_INIT_SP_OFFSET)
#endif
#ifdef CONFIG_SYS_LITTLE_ENDIAN
#define MIPS64_R_INFO(ssym, r_type3, r_type2, r_type) \
(((r_type) << 24) | ((r_type2) << 16) | ((r_type3) << 8) | (ssym))
@ -129,9 +134,31 @@ reset:
#endif
/* Set up temporary stack */
dli sp, CONFIG_SYS_SDRAM_BASE + CONFIG_SYS_INIT_SP_OFFSET
dli t0, -16
dli t1, CONFIG_SYS_INIT_SP_ADDR
and sp, t1, t0 # force 16 byte alignment
dsub sp, sp, GD_SIZE # reserve space for gd
and sp, sp, t0 # force 16 byte alignment
move k0, sp # save gd pointer
#ifdef CONFIG_SYS_MALLOC_F_LEN
dli t2, CONFIG_SYS_MALLOC_F_LEN
dsub sp, sp, t2 # reserve space for early malloc
and sp, sp, t0 # force 16 byte alignment
#endif
move fp, sp
/* Clear gd */
move t0, k0
1:
sw zero, 0(t0)
blt t0, t1, 1b
daddi t0, 4
#ifdef CONFIG_SYS_MALLOC_F_LEN
daddu t0, k0, GD_MALLOC_BASE # gd->malloc_base offset
sw sp, 0(t0)
#endif
dla t9, board_init_f
jr t9
move ra, zero

59
arch/mips/cpu/mips64/time.c
View File

@ -8,63 +8,12 @@
#include <common.h>
#include <asm/mipsregs.h>
static unsigned long timestamp;
/* how many counter cycles in a jiffy */
#define CYCLES_PER_JIFFY \
(CONFIG_SYS_MIPS_TIMER_FREQ + CONFIG_SYS_HZ / 2) / CONFIG_SYS_HZ
/*
* timer without interrupts
*/
int timer_init(void)
unsigned long notrace timer_read_counter(void)
{
/* Set up the timer for the first expiration. */
write_c0_compare(read_c0_count() + CYCLES_PER_JIFFY);
return 0;
return read_c0_count();
}
ulong get_timer(ulong base)
ulong notrace get_tbclk(void)
{
unsigned int count;
unsigned int expirelo = read_c0_compare();
/* Check to see if we have missed any timestamps. */
count = read_c0_count();
while ((count - expirelo) < 0x7fffffff) {
expirelo += CYCLES_PER_JIFFY;
timestamp++;
}
write_c0_compare(expirelo);
return timestamp - base;
}
void __udelay(unsigned long usec)
{
unsigned int tmo;
tmo = read_c0_count() + (usec * (CONFIG_SYS_MIPS_TIMER_FREQ / 1000000));
while ((tmo - read_c0_count()) < 0x7fffffff)
/*NOP*/;
}
/*
* This function is derived from PowerPC code (read timebase as long long).
* On MIPS it just returns the timer value.
*/
unsigned long long get_ticks(void)
{
return get_timer(0);
}
/*
* This function is derived from PowerPC code (timebase clock frequency).
* On MIPS it returns the number of timer ticks per second.
*/
ulong get_tbclk(void)
{
return CONFIG_SYS_HZ;
return CONFIG_SYS_MIPS_TIMER_FREQ;
}

2
arch/mips/include/asm/config.h
View File

@ -7,8 +7,6 @@
#ifndef _ASM_CONFIG_H_
#define _ASM_CONFIG_H_
#define CONFIG_SYS_GENERIC_GLOBAL_DATA
#define CONFIG_LMB
#define CONFIG_SYS_BOOT_RAMDISK_HIGH

98
arch/mips/lib/bootm.c
View File

@ -7,6 +7,7 @@
#include <common.h>
#include <image.h>
#include <fdt_support.h>
#include <asm/addrspace.h>
DECLARE_GLOBAL_DATA_PTR;
@ -20,6 +21,18 @@ DECLARE_GLOBAL_DATA_PTR;
#define mips_boot_malta 0
#endif
#if defined(CONFIG_MIPS_BOOT_CMDLINE_LEGACY)
#define mips_boot_cmdline_legacy 1
#else
#define mips_boot_cmdline_legacy 0
#endif
#if defined(CONFIG_MIPS_BOOT_ENV_LEGACY)
#define mips_boot_env_legacy 1
#else
#define mips_boot_env_legacy 0
#endif
static int linux_argc;
static char **linux_argv;
static char *linux_argp;
@ -60,9 +73,39 @@ static int boot_setup_linux(bootm_headers_t *images)
if (ret)
return ret;
#if defined(CONFIG_MIPS_BOOT_FDT) && defined(CONFIG_OF_LIBFDT)
if (images->ft_len) {
boot_fdt_add_mem_rsv_regions(&images->lmb, images->ft_addr);
ret = boot_relocate_fdt(&images->lmb, &images->ft_addr,
&images->ft_len);
if (ret)
return ret;
}
#endif
return 0;
}
static void boot_setup_fdt(bootm_headers_t *images)
{
#if defined(CONFIG_MIPS_BOOT_FDT) && defined(CONFIG_OF_LIBFDT)
u64 mem_start = 0;
u64 mem_size = gd->ram_size;
debug("## setup FDT\n");
fdt_chosen(images->ft_addr, 1);
fdt_fixup_memory_banks(images->ft_addr, &mem_start, &mem_size, 1);
fdt_fixup_ethernet(images->ft_addr);
fdt_initrd(images->ft_addr, images->initrd_start, images->initrd_end, 1);
#if defined(CONFIG_OF_BOARD_SETUP)
ft_board_setup(images->ft_addr, gd->bd);
#endif
#endif
}
static void linux_cmdline_init(void)
{
linux_argc = 1;
@ -92,7 +135,7 @@ static void linux_cmdline_dump(void)
debug(" arg %03d: %s\n", i, linux_argv[i]);
}
static void boot_cmdline_linux(bootm_headers_t *images)
static void linux_cmdline_legacy(bootm_headers_t *images)
{
const char *bootargs, *next, *quote;
@ -130,8 +173,40 @@ static void boot_cmdline_linux(bootm_headers_t *images)
bootargs = next;
}
}
linux_cmdline_dump();
static void linux_cmdline_append(bootm_headers_t *images)
{
char buf[24];
ulong mem, rd_start, rd_size;
/* append mem */
mem = gd->ram_size >> 20;
sprintf(buf, "mem=%luM", mem);
linux_cmdline_set(buf, strlen(buf));
/* append rd_start and rd_size */
rd_start = images->initrd_start;
rd_size = images->initrd_end - images->initrd_start;
if (rd_size) {
sprintf(buf, "rd_start=0x%08lX", rd_start);
linux_cmdline_set(buf, strlen(buf));
sprintf(buf, "rd_size=0x%lX", rd_size);
linux_cmdline_set(buf, strlen(buf));
}
}
static void boot_cmdline_linux(bootm_headers_t *images)
{
if (mips_boot_cmdline_legacy && !images->ft_len) {
linux_cmdline_legacy(images);
if (!mips_boot_env_legacy)
linux_cmdline_append(images);
linux_cmdline_dump();
}
}
static void linux_env_init(void)
@ -165,7 +240,7 @@ static void linux_env_set(const char *env_name, const char *env_val)
}
}
static void boot_prep_linux(bootm_headers_t *images)
static void linux_env_legacy(bootm_headers_t *images)
{
char env_buf[12];
const char *cp;
@ -213,6 +288,15 @@ static void boot_prep_linux(bootm_headers_t *images)
}
}
static void boot_prep_linux(bootm_headers_t *images)
{
if (mips_boot_env_legacy && !images->ft_len)
linux_env_legacy(images);
if (images->ft_len)
boot_setup_fdt(images);
}
static void boot_jump_linux(bootm_headers_t *images)
{
typedef void __noreturn (*kernel_entry_t)(int, ulong, ulong, ulong);
@ -226,8 +310,12 @@ static void boot_jump_linux(bootm_headers_t *images)
if (mips_boot_malta)
linux_extra = gd->ram_size;
/* we assume that the kernel is in place */
printf("\nStarting kernel ...\n\n");
#ifdef CONFIG_BOOTSTAGE_FDT
bootstage_fdt_add_report();
#endif
#ifdef CONFIG_BOOTSTAGE_REPORT
bootstage_report();
#endif
kernel(linux_argc, (ulong)linux_argv, (ulong)linux_env, linux_extra);
}

2
include/configs/malta.h
View File

@ -38,8 +38,6 @@
#define CONFIG_SYS_MHZ 250 /* arbitrary value */
#define CONFIG_SYS_MIPS_TIMER_FREQ (CONFIG_SYS_MHZ * 1000000)
#define CONFIG_SWAP_IO_SPACE
/*
* Memory map
*/