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bootvx: x86: Assign bootaddr based on kernel memory base

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On VxWorks x86 its bootline address is at a pre-defined offset @
0x1200. If 'bootaddr' is not passed via environment variable, we
assign its value based on the kernel memory base address.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Bin Meng 2018-04-11 22:02:22 -07:00
parent ced71a2f72
commit 79c584e559
2 changed files with 49 additions and 41 deletions
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87
cmd/elf.c
View File

@ -246,7 +246,7 @@ int do_bootelf(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
int do_bootvx(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
unsigned long addr; /* Address of image */
unsigned long bootaddr; /* Address to put the bootline */
unsigned long bootaddr = 0; /* Address to put the bootline */
char *bootline; /* Text of the bootline */
char *tmp; /* Temporary char pointer */
char build_buf[128]; /* Buffer for building the bootline */
@ -295,6 +295,45 @@ int do_bootvx(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
puts("## Ethernet MAC address not copied to NV RAM\n");
#endif
#ifdef CONFIG_X86
/*
* Get VxWorks's physical memory base address from environment,
* if we don't specify it in the environment, use a default one.
*/
base = env_get_hex("vx_phys_mem_base", VXWORKS_PHYS_MEM_BASE);
data = (struct e820_entry *)(base + E820_DATA_OFFSET);
info = (struct e820_info *)(base + E820_INFO_OFFSET);
memset(info, 0, sizeof(struct e820_info));
info->sign = E820_SIGNATURE;
info->entries = install_e820_map(E820MAX, data);
info->addr = (info->entries - 1) * sizeof(struct e820_entry) +
E820_DATA_OFFSET;
/*
* Explicitly clear the bootloader image size otherwise if memory
* at this offset happens to contain some garbage data, the final
* available memory size for the kernel is insane.
*/
*(u32 *)(base + BOOT_IMAGE_SIZE_OFFSET) = 0;
/*
* Prepare compatible framebuffer information block.
* The VESA mode has to be 32-bit RGBA.
*/
if (vesa->x_resolution && vesa->y_resolution) {
gop = (struct efi_gop_info *)(base + EFI_GOP_INFO_OFFSET);
gop->magic = EFI_GOP_INFO_MAGIC;
gop->info.version = 0;
gop->info.width = vesa->x_resolution;
gop->info.height = vesa->y_resolution;
gop->info.pixel_format = EFI_GOT_RGBA8;
gop->info.pixels_per_scanline = vesa->bytes_per_scanline / 4;
gop->fb_base = vesa->phys_base_ptr;
gop->fb_size = vesa->bytes_per_scanline * vesa->y_resolution;
}
#endif
/*
* Use bootaddr to find the location in memory that VxWorks
* will look for the bootline string. The default value is
@ -303,11 +342,16 @@ int do_bootvx(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
*/
tmp = env_get("bootaddr");
if (!tmp) {
#ifdef CONFIG_X86
bootaddr = base + X86_BOOT_LINE_OFFSET;
#else
printf("## VxWorks bootline address not specified\n");
return 1;
#endif
}
bootaddr = simple_strtoul(tmp, NULL, 16);
if (!bootaddr)
bootaddr = simple_strtoul(tmp, NULL, 16);
/*
* Check to see if the bootline is defined in the 'bootargs' parameter.
@ -371,45 +415,6 @@ int do_bootvx(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
flush_cache(bootaddr, max(strlen(bootline), (size_t)255));
printf("## Using bootline (@ 0x%lx): %s\n", bootaddr, (char *)bootaddr);
#ifdef CONFIG_X86
/*
* Get VxWorks's physical memory base address from environment,
* if we don't specify it in the environment, use a default one.
*/
base = env_get_hex("vx_phys_mem_base", VXWORKS_PHYS_MEM_BASE);
data = (struct e820_entry *)(base + E820_DATA_OFFSET);
info = (struct e820_info *)(base + E820_INFO_OFFSET);
memset(info, 0, sizeof(struct e820_info));
info->sign = E820_SIGNATURE;
info->entries = install_e820_map(E820MAX, data);
info->addr = (info->entries - 1) * sizeof(struct e820_entry) +
E820_DATA_OFFSET;
/*
* Explicitly clear the bootloader image size otherwise if memory
* at this offset happens to contain some garbage data, the final
* available memory size for the kernel is insane.
*/
*(u32 *)(base + BOOT_IMAGE_SIZE_OFFSET) = 0;
/*
* Prepare compatible framebuffer information block.
* The VESA mode has to be 32-bit RGBA.
*/
if (vesa->x_resolution && vesa->y_resolution) {
gop = (struct efi_gop_info *)(base + EFI_GOP_INFO_OFFSET);
gop->magic = EFI_GOP_INFO_MAGIC;
gop->info.version = 0;
gop->info.width = vesa->x_resolution;
gop->info.height = vesa->y_resolution;
gop->info.pixel_format = EFI_GOT_RGBA8;
gop->info.pixels_per_scanline = vesa->bytes_per_scanline / 4;
gop->fb_base = vesa->phys_base_ptr;
gop->fb_size = vesa->bytes_per_scanline * vesa->y_resolution;
}
#endif
/*
* If the data at the load address is an elf image, then
* treat it like an elf image. Otherwise, assume that it is a

3
include/vxworks.h
View File

@ -16,6 +16,9 @@
*/
#define VXWORKS_PHYS_MEM_BASE 0x100000
/* x86 bootline offset relative to LOCAL_MEM_LOCAL_ADRS in VxWorks */
#define X86_BOOT_LINE_OFFSET 0x1200
/*
* VxWorks x86 E820 related stuff
*