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[new uImage] Cleanup do_botm_linux() boot allocations

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This patch moves common pre-boot allocation steps shared between PPC
and M68K to a helper routines:

common:
- get_boot_sp_limit()
- get_boot_cmline()
- get_boot_kbd()

platform:
- set_clocks_in_mhz()

Signed-off-by: Marian Balakowicz <m8@semihalf.com>
master
Marian Balakowicz 17 years ago committed by Wolfgang Denk
parent ceaed2b1e5
commit b6b0fe6460
4 changed files with 189 additions and 117 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 118
      common/image.c
  2. 10
      include/image.h
  3. 72
      lib_m68k/bootm.c
  4. 106
      lib_ppc/bootm.c

118
common/image.c
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@ -42,9 +42,15 @@
#endif
extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
#ifdef CONFIG_CMD_BDI
extern int do_bdinfo(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
#endif
DECLARE_GLOBAL_DATA_PTR;
#else
#include "mkimage.h"
#endif
#endif /* USE_HOSTCC*/
#include <image.h>
@ -501,17 +507,19 @@ void get_ramdisk (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
* variable and if requested ramdisk data is moved to a specified location.
*
* returns:
* initrd_start and initrd_end are set to final (after relocation) ramdisk
* - initrd_start and initrd_end are set to final (after relocation) ramdisk
* start/end addresses if ramdisk image start and len were provided
* otherwise set initrd_start and initrd_end to zeros
*
* otherwise set initrd_start and initrd_end set to zeros
* - returns new allc_current, next free address below BOOTMAPSZ
*/
void ramdisk_high (ulong rd_data, ulong rd_len, bd_t *kbd, ulong sp_limit,
ulong sp, ulong *initrd_start, ulong *initrd_end)
ulong ramdisk_high (ulong alloc_current, ulong rd_data, ulong rd_len,
bd_t *kbd, ulong sp_limit, ulong sp,
ulong *initrd_start, ulong *initrd_end)
{
char *s;
ulong initrd_high;
int initrd_copy_to_ram = 1;
ulong new_alloc_current = alloc_current;
if ((s = getenv ("initrd_high")) != NULL) {
/* a value of "no" or a similar string will act like 0,
@ -540,7 +548,8 @@ void ramdisk_high (ulong rd_data, ulong rd_len, bd_t *kbd, ulong sp_limit,
*initrd_start = rd_data;
*initrd_end = rd_data + rd_len;
} else {
*initrd_start = (ulong)kbd - rd_len;
new_alloc_current = alloc_current - rd_len;
*initrd_start = new_alloc_current;
*initrd_start &= ~(4096 - 1); /* align on page */
if (initrd_high) {
@ -566,8 +575,10 @@ void ramdisk_high (ulong rd_data, ulong rd_len, bd_t *kbd, ulong sp_limit,
nsp -= rd_len;
nsp &= ~(4096 - 1); /* align on page */
if (nsp >= sp_limit)
if (nsp >= sp_limit) {
*initrd_start = nsp;
new_alloc_current = alloc_current;
}
}
show_boot_progress (12);
@ -587,7 +598,96 @@ void ramdisk_high (ulong rd_data, ulong rd_len, bd_t *kbd, ulong sp_limit,
}
debug (" ramdisk load start = 0x%08lx, ramdisk load end = 0x%08lx\n",
*initrd_start, *initrd_end);
return new_alloc_current;
}
/**
* get_boot_sp_limit - calculate stack pointer limit
* @sp: current stack pointer
*
* get_boot_sp_limit() takes current stack pointer adrress and calculates
* stack pointer limit, below which kernel boot data (cmdline, board info,
* etc.) will be allocated.
*
* returns:
* stack pointer limit
*/
ulong get_boot_sp_limit(ulong sp)
{
ulong sp_limit = sp;
sp_limit -= 2048; /* just to be sure */
/* make sure sp_limit is within kernel mapped space */
if (sp_limit > CFG_BOOTMAPSZ)
sp_limit = CFG_BOOTMAPSZ;
sp_limit &= ~0xF;
return sp_limit;
}
/**
* get_boot_cmdline - allocate and initialize kernel cmdline
* @alloc_current: current boot allocation address (counting down
* from sp_limit)
* @cmd_start: pointer to a ulong variable, will hold cmdline start
* @cmd_end: pointer to a ulong variable, will hold cmdline end
*
* get_boot_cmdline() allocates space for kernel command line below
* provided alloc_current address. If "bootargs" U-boot environemnt
* variable is present its contents is copied to allocated kernel
* command line.
*
* returns:
* alloc_current after cmdline allocation
*/
ulong get_boot_cmdline (ulong alloc_current, ulong *cmd_start, ulong *cmd_end)
{
char *cmdline;
char *s;
cmdline = (char *)((alloc_current - CFG_BARGSIZE) & ~0xF);
if ((s = getenv("bootargs")) == NULL)
s = "";
strcpy(cmdline, s);
*cmd_start = (ulong) & cmdline[0];
*cmd_end = *cmd_start + strlen(cmdline);
debug ("## cmdline at 0x%08lx ... 0x%08lx\n", *cmd_start, *cmd_end);
return (ulong)cmdline;
}
/**
* get_boot_kbd - allocate and initialize kernel copy of board info
* @alloc_current: current boot allocation address (counting down
* from sp_limit)
* @kbd: double pointer to board info data
*
* get_boot_kbd() - allocates space for kernel copy of board info data.
* Space is allocated below provided alloc_current address and kernel
* board info is initialized with the current u-boot board info data.
*
* returns:
* alloc_current after kbd allocation
*/
ulong get_boot_kbd (ulong alloc_current, bd_t **kbd)
{
*kbd = (bd_t *) (((ulong)alloc_current - sizeof(bd_t)) & ~0xF);
**kbd = *(gd->bd);
debug ("## kernel board info at 0x%08lx\n", (ulong)*kbd);
#if defined(DEBUG) && defined(CONFIG_CMD_BDI)
do_bdinfo(NULL, 0, 0, NULL);
#endif
return (ulong)*kbd;
}
#endif /* CONFIG_PPC || CONFIG_M68K */
#endif /* USE_HOSTCC */
#endif /* USE_HOSTCC */

10
include/image.h
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@ -343,9 +343,15 @@ void get_ramdisk (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[],
ulong *rd_start, ulong *rd_end);
#if defined(CONFIG_PPC) || defined(CONFIG_M68K)
void ramdisk_high (ulong rd_data_start, ulong rd_len, bd_t *kbd, ulong sp_limit,
ulong sp, ulong *initrd_start, ulong *initrd_end);
ulong ramdisk_high (ulong alloc_current, ulong rd_data, ulong rd_len,
bd_t *kbd, ulong sp_limit, ulong sp,
ulong *initrd_start, ulong *initrd_end);
ulong get_boot_sp_limit (ulong sp);
ulong get_boot_cmdline (ulong alloc_current, ulong *cmd_start, ulong *cmd_end);
ulong get_boot_kbd (ulong alloc_current, bd_t **kbd);
#endif /* CONFIG_PPC || CONFIG_M68K */
#endif /* USE_HOSTCC */
#endif /* __IMAGE_H__ */

72
lib_m68k/bootm.c
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@ -29,6 +29,9 @@
#include <watchdog.h>
#include <environment.h>
#include <asm/byteorder.h>
#ifdef CONFIG_SHOW_BOOT_PROGRESS
# include <status_led.h>
#endif
DECLARE_GLOBAL_DATA_PTR;
@ -37,27 +40,19 @@ DECLARE_GLOBAL_DATA_PTR;
#define LINUX_MAX_ENVS 256
#define LINUX_MAX_ARGS 256
#ifdef CONFIG_SHOW_BOOT_PROGRESS
# include <status_led.h>
# define SHOW_BOOT_PROGRESS(arg) show_boot_progress(arg)
#else
# define SHOW_BOOT_PROGRESS(arg)
#endif
static ulong get_sp (void);
static void set_clocks_in_mhz (bd_t *kbd);
void do_bootm_linux(cmd_tbl_t * cmdtp, int flag,
int argc, char *argv[],
image_header_t *hdr, int verify)
{
ulong sp_limit;
ulong sp, sp_limit, alloc_current;
ulong rd_data_start, rd_data_end, rd_len;
ulong initrd_start, initrd_end;
ulong cmd_start, cmd_end;
char *cmdline;
char *s;
bd_t *kbd;
void (*kernel) (bd_t *, ulong, ulong, ulong, ulong);
@ -70,41 +65,18 @@ void do_bootm_linux(cmd_tbl_t * cmdtp, int flag,
* memory, which means far enough below the current stack
* pointer.
*/
sp_limit = get_sp();
debug("## Current stack ends at 0x%08lX ", sp_limit);
sp_limit -= 2048; /* just to be sure */
if (sp_limit > CFG_BOOTMAPSZ)
sp_limit = CFG_BOOTMAPSZ;
sp_limit &= ~0xF;
debug("=> set upper limit to 0x%08lX\n", sp_limit);
cmdline = (char *)((sp_limit - CFG_BARGSIZE) & ~0xF);
kbd = (bd_t *) (((ulong) cmdline - sizeof(bd_t)) & ~0xF);
if ((s = getenv("bootargs")) == NULL)
s = "";
strcpy(cmdline, s);
cmd_start = (ulong) & cmdline[0];
cmd_end = cmd_start + strlen(cmdline);
*kbd = *(gd->bd);
sp = get_sp();
debug ("## Current stack ends at 0x%08lx ", sp);
#ifdef DEBUG
printf("## cmdline at 0x%08lX ... 0x%08lX\n", cmd_start, cmd_end);
alloc_current = sp_limit = get_boot_sp_limit(sp);
debug ("=> set upper limit to 0x%08lx\n", sp_limit);
do_bdinfo(NULL, 0, 0, NULL);
#endif
/* allocate space and init command line */
alloc_current = get_boot_cmdline (alloc_current, &cmd_start, &cmd_end);
if ((s = getenv("clocks_in_mhz")) != NULL) {
/* convert all clock information to MHz */
kbd->bi_intfreq /= 1000000L;
kbd->bi_busfreq /= 1000000L;
}
/* allocate space for kernel copy of board info */
alloc_current = get_boot_kbd (alloc_current, &kbd);
set_clocks_in_mhz(kbd);
/* find kernel */
kernel =
@ -115,13 +87,14 @@ void do_bootm_linux(cmd_tbl_t * cmdtp, int flag,
IH_ARCH_M68K, &rd_data_start, &rd_data_end);
rd_len = rd_data_end - rd_data_start;
ramdisk_high (rd_data_start, rd_len, kdb, sp_limit, get_sp (),
alloc_current = ramdisk_high (alloc_current, rd_data_start, rd_len,
kbd, sp_limit, get_sp (),
&initrd_start, &initrd_end);
debug("## Transferring control to Linux (at address %08lx) ...\n",
(ulong) kernel);
SHOW_BOOT_PROGRESS(15);
show_boot_progress (15);
/*
* Linux Kernel Parameters (passing board info data):
@ -144,3 +117,14 @@ static ulong get_sp (void)
return sp;
}
static void set_clocks_in_mhz (bd_t *kbd)
{
char *s;
if ((s = getenv("clocks_in_mhz")) != NULL) {
/* convert all clock information to MHz */
kbd->bi_intfreq /= 1000000L;
kbd->bi_busfreq /= 1000000L;
}
}

106
lib_ppc/bootm.c
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@ -51,10 +51,7 @@ DECLARE_GLOBAL_DATA_PTR;
extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
static ulong get_sp (void);
#if defined(CONFIG_CMD_BDI)
extern int do_bdinfo (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
#endif
static void set_clocks_in_mhz (bd_t *kbd);
void __attribute__((noinline))
do_bootm_linux(cmd_tbl_t *cmdtp, int flag,
@ -62,14 +59,12 @@ do_bootm_linux(cmd_tbl_t *cmdtp, int flag,
image_header_t *hdr,
int verify)
{
ulong sp, sp_limit, alloc_current;
ulong initrd_start, initrd_end;
ulong rd_data_start, rd_data_end, rd_len;
ulong cmd_start, cmd_end;
char *cmdline;
ulong sp_limit;
char *s;
bd_t *kbd;
void (*kernel)(bd_t *, ulong, ulong, ulong, ulong);
@ -88,60 +83,18 @@ do_bootm_linux(cmd_tbl_t *cmdtp, int flag,
* memory, which means far enough below the current stack
* pointer.
*/
sp = get_sp();
debug ("## Current stack ends at 0x%08lx ", sp);
sp_limit = get_sp();
debug ("## Current stack ends at 0x%08lX ", sp_limit);
sp_limit -= 2048; /* just to be sure */
if (sp_limit > CFG_BOOTMAPSZ)
sp_limit = CFG_BOOTMAPSZ;
sp_limit &= ~0xF;
debug ("=> set upper limit to 0x%08lX\n", sp_limit);
alloc_current = sp_limit = get_boot_sp_limit(sp);
debug ("=> set upper limit to 0x%08lx\n", sp_limit);
cmdline = (char *)((sp_limit - CFG_BARGSIZE) & ~0xF);
kbd = (bd_t *)(((ulong)cmdline - sizeof(bd_t)) & ~0xF);
/* allocate space and init command line */
alloc_current = get_boot_cmdline (alloc_current, &cmd_start, &cmd_end);
if ((s = getenv("bootargs")) == NULL)
s = "";
strcpy (cmdline, s);
cmd_start = (ulong)&cmdline[0];
cmd_end = cmd_start + strlen(cmdline);
*kbd = *(gd->bd);
#ifdef DEBUG
printf ("## cmdline at 0x%08lX ... 0x%08lX\n", cmd_start, cmd_end);
#if defined(CONFIG_CMD_BDI)
do_bdinfo (NULL, 0, 0, NULL);
#endif
#endif
if ((s = getenv ("clocks_in_mhz")) != NULL) {
/* convert all clock information to MHz */
kbd->bi_intfreq /= 1000000L;
kbd->bi_busfreq /= 1000000L;
#if defined(CONFIG_MPC8220)
kbd->bi_inpfreq /= 1000000L;
kbd->bi_pcifreq /= 1000000L;
kbd->bi_pevfreq /= 1000000L;
kbd->bi_flbfreq /= 1000000L;
kbd->bi_vcofreq /= 1000000L;
#endif
#if defined(CONFIG_CPM2)
kbd->bi_cpmfreq /= 1000000L;
kbd->bi_brgfreq /= 1000000L;
kbd->bi_sccfreq /= 1000000L;
kbd->bi_vco /= 1000000L;
#endif
#if defined(CONFIG_MPC5xxx)
kbd->bi_ipbfreq /= 1000000L;
kbd->bi_pcifreq /= 1000000L;
#endif /* CONFIG_MPC5xxx */
}
/* allocate space for kernel copy of board info */
alloc_current = get_boot_kbd (alloc_current, &kbd);
set_clocks_in_mhz(kbd);
/* find kernel */
kernel = (void (*)(bd_t *, ulong, ulong, ulong, ulong))image_get_ep (hdr);
@ -152,7 +105,8 @@ do_bootm_linux(cmd_tbl_t *cmdtp, int flag,
rd_len = rd_data_end - rd_data_start;
ramdisk_high (rd_data_start, rd_len, kbd, sp_limit, get_sp (),
alloc_current = ramdisk_high (alloc_current, rd_data_start, rd_len,
kbd, sp_limit, get_sp (),
&initrd_start, &initrd_end);
#if defined(CONFIG_OF_LIBFDT)
@ -266,8 +220,8 @@ do_bootm_linux(cmd_tbl_t *cmdtp, int flag,
of_len = be32_to_cpu(fdt_totalsize(of_data));
/* position on a 4K boundary before the kbd */
of_start = (ulong)kbd - of_len;
/* position on a 4K boundary before the alloc_current */
of_start = alloc_current - of_len;
of_start &= ~(4096 - 1); /* align on page */
debug ("## device tree at 0x%08lX ... 0x%08lX (len=%ld=0x%lX)\n",
of_data, of_data + of_len - 1, of_len, of_len);
@ -353,6 +307,34 @@ static ulong get_sp (void)
return sp;
}
static void set_clocks_in_mhz (bd_t *kbd)
{
char *s;
if ((s = getenv ("clocks_in_mhz")) != NULL) {
/* convert all clock information to MHz */
kbd->bi_intfreq /= 1000000L;
kbd->bi_busfreq /= 1000000L;
#if defined(CONFIG_MPC8220)
kbd->bi_inpfreq /= 1000000L;
kbd->bi_pcifreq /= 1000000L;
kbd->bi_pevfreq /= 1000000L;
kbd->bi_flbfreq /= 1000000L;
kbd->bi_vcofreq /= 1000000L;
#endif
#if defined(CONFIG_CPM2)
kbd->bi_cpmfreq /= 1000000L;
kbd->bi_brgfreq /= 1000000L;
kbd->bi_sccfreq /= 1000000L;
kbd->bi_vco /= 1000000L;
#endif
#if defined(CONFIG_MPC5xxx)
kbd->bi_ipbfreq /= 1000000L;
kbd->bi_pcifreq /= 1000000L;
#endif /* CONFIG_MPC5xxx */
}
}
#if defined(CONFIG_OF_LIBFDT)
static void fdt_error (const char *msg)
{

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