upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
159 lines
3.1 KiB
159 lines
3.1 KiB
/**
|
|
* (C) Copyright 2014, Cavium Inc.
|
|
* (C) Copyright 2017, Xilinx Inc.
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
**/
|
|
|
|
#include <asm-offsets.h>
|
|
#include <config.h>
|
|
#include <efi_loader.h>
|
|
#include <version.h>
|
|
#include <asm/macro.h>
|
|
#include <asm/psci.h>
|
|
#include <asm/system.h>
|
|
|
|
/*
|
|
* Issue the hypervisor call
|
|
*
|
|
* x0~x7: input arguments
|
|
* x0~x3: output arguments
|
|
*/
|
|
static void __efi_runtime hvc_call(struct pt_regs *args)
|
|
{
|
|
asm volatile(
|
|
"ldr x0, %0\n"
|
|
"ldr x1, %1\n"
|
|
"ldr x2, %2\n"
|
|
"ldr x3, %3\n"
|
|
"ldr x4, %4\n"
|
|
"ldr x5, %5\n"
|
|
"ldr x6, %6\n"
|
|
"ldr x7, %7\n"
|
|
"hvc #0\n"
|
|
"str x0, %0\n"
|
|
"str x1, %1\n"
|
|
"str x2, %2\n"
|
|
"str x3, %3\n"
|
|
: "+m" (args->regs[0]), "+m" (args->regs[1]),
|
|
"+m" (args->regs[2]), "+m" (args->regs[3])
|
|
: "m" (args->regs[4]), "m" (args->regs[5]),
|
|
"m" (args->regs[6]), "m" (args->regs[7])
|
|
: "x0", "x1", "x2", "x3", "x4", "x5", "x6", "x7",
|
|
"x8", "x9", "x10", "x11", "x12", "x13", "x14", "x15",
|
|
"x16", "x17");
|
|
}
|
|
|
|
/*
|
|
* void smc_call(arg0, arg1...arg7)
|
|
*
|
|
* issue the secure monitor call
|
|
*
|
|
* x0~x7: input arguments
|
|
* x0~x3: output arguments
|
|
*/
|
|
|
|
void __efi_runtime smc_call(struct pt_regs *args)
|
|
{
|
|
asm volatile(
|
|
"ldr x0, %0\n"
|
|
"ldr x1, %1\n"
|
|
"ldr x2, %2\n"
|
|
"ldr x3, %3\n"
|
|
"ldr x4, %4\n"
|
|
"ldr x5, %5\n"
|
|
"ldr x6, %6\n"
|
|
"smc #0\n"
|
|
"str x0, %0\n"
|
|
"str x1, %1\n"
|
|
"str x2, %2\n"
|
|
"str x3, %3\n"
|
|
: "+m" (args->regs[0]), "+m" (args->regs[1]),
|
|
"+m" (args->regs[2]), "+m" (args->regs[3])
|
|
: "m" (args->regs[4]), "m" (args->regs[5]),
|
|
"m" (args->regs[6])
|
|
: "x0", "x1", "x2", "x3", "x4", "x5", "x6", "x7",
|
|
"x8", "x9", "x10", "x11", "x12", "x13", "x14", "x15",
|
|
"x16", "x17");
|
|
}
|
|
|
|
/*
|
|
* For now, all systems we support run at least in EL2 and thus
|
|
* trigger PSCI calls to EL3 using SMC. If anyone ever wants to
|
|
* use PSCI on U-Boot running below a hypervisor, please detect
|
|
* this and set the flag accordingly.
|
|
*/
|
|
static const __efi_runtime_data bool use_smc_for_psci = true;
|
|
|
|
void __noreturn __efi_runtime psci_system_reset(void)
|
|
{
|
|
struct pt_regs regs;
|
|
|
|
regs.regs[0] = ARM_PSCI_0_2_FN_SYSTEM_RESET;
|
|
|
|
if (use_smc_for_psci)
|
|
smc_call(®s);
|
|
else
|
|
hvc_call(®s);
|
|
|
|
while (1)
|
|
;
|
|
}
|
|
|
|
void __noreturn __efi_runtime psci_system_off(void)
|
|
{
|
|
struct pt_regs regs;
|
|
|
|
regs.regs[0] = ARM_PSCI_0_2_FN_SYSTEM_OFF;
|
|
|
|
if (use_smc_for_psci)
|
|
smc_call(®s);
|
|
else
|
|
hvc_call(®s);
|
|
|
|
while (1)
|
|
;
|
|
}
|
|
|
|
#ifdef CONFIG_CMD_POWEROFF
|
|
int do_poweroff(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
|
|
{
|
|
puts("poweroff ...\n");
|
|
|
|
udelay(50000); /* wait 50 ms */
|
|
|
|
disable_interrupts();
|
|
|
|
psci_system_off();
|
|
|
|
/*NOTREACHED*/
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_PSCI_RESET
|
|
void reset_misc(void)
|
|
{
|
|
psci_system_reset();
|
|
}
|
|
|
|
#ifdef CONFIG_EFI_LOADER
|
|
void __efi_runtime EFIAPI efi_reset_system(
|
|
enum efi_reset_type reset_type,
|
|
efi_status_t reset_status,
|
|
unsigned long data_size, void *reset_data)
|
|
{
|
|
switch (reset_type) {
|
|
case EFI_RESET_COLD:
|
|
case EFI_RESET_WARM:
|
|
psci_system_reset();
|
|
break;
|
|
case EFI_RESET_SHUTDOWN:
|
|
psci_system_off();
|
|
break;
|
|
}
|
|
|
|
while (1) { }
|
|
}
|
|
#endif /* CONFIG_EFI_LOADER */
|
|
#endif /* CONFIG_PSCI_RESET */
|
|
|