mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-24 20:13:39 +00:00
90526e9fba
Move this header out of the common header. Network support is used in quite a few places but it still does not warrant blanket inclusion. Note that this net.h header itself has quite a lot in it. It could be split into the driver-mode support, functions, structures, checksumming, etc. Signed-off-by: Simon Glass <sjg@chromium.org>
132 lines
2.6 KiB
C
132 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/**
|
|
* (C) Copyright 2014, Cavium Inc.
|
|
* (C) Copyright 2017, Xilinx Inc.
|
|
*
|
|
**/
|
|
|
|
#include <asm-offsets.h>
|
|
#include <config.h>
|
|
#include <version.h>
|
|
#include <asm/cache.h>
|
|
#include <asm/macro.h>
|
|
#include <asm/psci.h>
|
|
#include <asm/ptrace.h>
|
|
#include <asm/system.h>
|
|
|
|
/*
|
|
* Issue the hypervisor call
|
|
*
|
|
* x0~x7: input arguments
|
|
* x0~x3: output arguments
|
|
*/
|
|
static void 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"
|
|
"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])
|
|
: "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 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 bool use_smc_for_psci = true;
|
|
|
|
void __noreturn 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 psci_system_reset2(u32 reset_level, u32 cookie)
|
|
{
|
|
struct pt_regs regs;
|
|
|
|
regs.regs[0] = ARM_PSCI_0_2_FN64_SYSTEM_RESET2;
|
|
regs.regs[1] = PSCI_RESET2_TYPE_VENDOR | reset_level;
|
|
regs.regs[2] = cookie;
|
|
if (use_smc_for_psci)
|
|
smc_call(®s);
|
|
else
|
|
hvc_call(®s);
|
|
|
|
while (1)
|
|
;
|
|
}
|
|
|
|
void __noreturn 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)
|
|
;
|
|
}
|