static int setup_dest_addr(void)
{
debug("Monitor len: %08lX\n", gd->mon_len);
/*
* Ram is setup, size stored in gd !!
*/
debug("Ram size: %08lX\n", (ulong)gd->ram_size);
#ifdef CONFIG_SYS_MEM_RESERVE_SECURE
/* Reserve memory for secure MMU tables, and/or security monitor */
gd->ram_size -= CONFIG_SYS_MEM_RESERVE_SECURE;
/*
* Record secure memory location. Need recalcuate if memory splits
* into banks, or the ram base is not zero.
*/
gd->secure_ram = gd->ram_size;
#endif
/*
* Subtract specified amount of memory to hide so that it won't
* get "touched" at all by U-Boot. By fixing up gd->ram_size
* the Linux kernel should now get passed the now "corrected"
* memory size and won't touch it either. This has been used
* by arch/powerpc exclusively. Now ARMv8 takes advantage of
* thie mechanism. If memory is split into banks, addresses
* need to be calculated.
*/
gd->ram_size = board_reserve_ram_top(gd->ram_size);
#ifdef CONFIG_SYS_SDRAM_BASE
gd->ram_top = CONFIG_SYS_SDRAM_BASE;
#endif
gd->ram_top += get_effective_memsize();
gd->ram_top = board_get_usable_ram_top(gd->mon_len);
gd->relocaddr = gd->ram_top;
debug("Ram top: %08lX\n", (ulong)gd->ram_top);
#if defined(CONFIG_MP) && (defined(CONFIG_MPC86xx) || defined(CONFIG_E500))
/*
* We need to make sure the location we intend to put secondary core
* boot code is reserved and not used by any part of u-boot
*/
if (gd->relocaddr > determine_mp_bootpg(NULL)) {
gd->relocaddr = determine_mp_bootpg(NULL);
debug("Reserving MP boot page to %08lx\n", gd->relocaddr);
}
#endif
return 0;
}
int calculate_relocation_address(void)
{
const ulong uboot_size = (uintptr_t)&__bss_end -
(uintptr_t)&__text_start;
ulong total_size;
ulong dest_addr;
ulong fdt_size = 0;
#if defined(CONFIG_OF_SEPARATE) && defined(CONFIG_OF_CONTROL)
if (gd->fdt_blob)
fdt_size = ALIGN(fdt_totalsize(gd->fdt_blob) + 0x1000, 32);
#endif
total_size = ALIGN(uboot_size, 1 << 12) + CONFIG_SYS_MALLOC_LEN +
CONFIG_SYS_STACK_SIZE + fdt_size;
dest_addr = board_get_usable_ram_top(total_size);
/*
* NOTE: All destination address are rounded down to 16-byte
* boundary to satisfy various worst-case alignment
* requirements
*/
dest_addr &= ~15;
#if defined(CONFIG_OF_SEPARATE) && defined(CONFIG_OF_CONTROL)
/*
* If the device tree is sitting immediate above our image then we
* must relocate it. If it is embedded in the data section, then it
* will be relocated with other data.
*/
if (gd->fdt_blob) {
dest_addr -= fdt_size;
gd->new_fdt = (void *)dest_addr;
dest_addr &= ~15;
}
#endif
/* U-Boot is below the FDT */
dest_addr -= uboot_size;
dest_addr &= ~((1 << 12) - 1);
gd->relocaddr = dest_addr;
gd->reloc_off = dest_addr - (uintptr_t)&__text_start;
/* Stack is at the bottom, so it can grow down */
gd->start_addr_sp = dest_addr - CONFIG_SYS_MALLOC_LEN;
return 0;
}
static int setup_dest_addr(void)
{
debug("Monitor len: %08lX\n", gd->mon_len);
/*
* Ram is setup, size stored in gd !!
*/
debug("Ram size: %08lX\n", (ulong)gd->ram_size);
#if defined(CONFIG_SYS_MEM_TOP_HIDE)
/*
* Subtract specified amount of memory to hide so that it won't
* get "touched" at all by U-Boot. By fixing up gd->ram_size
* the Linux kernel should now get passed the now "corrected"
* memory size and won't touch it either. This should work
* for arch/ppc and arch/powerpc. Only Linux board ports in
* arch/powerpc with bootwrapper support, that recalculate the
* memory size from the SDRAM controller setup will have to
* get fixed.
*/
gd->ram_size -= CONFIG_SYS_MEM_TOP_HIDE;
#endif
#ifdef CONFIG_SYS_SDRAM_BASE
gd->ram_top = CONFIG_SYS_SDRAM_BASE;
#endif
gd->ram_top += get_effective_memsize();
gd->ram_top = board_get_usable_ram_top(gd->mon_len);
gd->relocaddr = gd->ram_top;
debug("Ram top: %08lX\n", (ulong)gd->ram_top);
#if defined(CONFIG_MP) && (defined(CONFIG_MPC86xx) || defined(CONFIG_E500))
/*
* We need to make sure the location we intend to put secondary core
* boot code is reserved and not used by any part of u-boot
*/
if (gd->relocaddr > determine_mp_bootpg(NULL)) {
gd->relocaddr = determine_mp_bootpg(NULL);
debug("Reserving MP boot page to %08lx\n", gd->relocaddr);
}
#endif
return 0;
}
