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Revert "firmware: qcom: scm: Add support for MC boot address API"

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This reverts commits 55845f46df and c50031f03d, since this still
causes a build failure when QCOM_SCM is a loadable module, or when
CONFIG_SMP is disabled:

ERROR: modpost: "cpu_logical_map" [drivers/firmware/qcom-scm.ko] undefined!

This be done better for 5.17, but it's too late now to rework
properly.

Fixes: c50031f03d ("firmware: qcom: scm: Don't break compile test on non-ARM platforms")
Fixes: 55845f46df ("firmware: qcom: scm: Add support for MC boot address API")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2021-10-27 16:25:07 +02:00
parent 4f22aa4569
commit 7db2bc925e
2 changed files with 17 additions and 81 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

94
drivers/firmware/qcom_scm.c
View file

@ -17,10 +17,6 @@
#include <linux/reset-controller.h>
#include <linux/arm-smccc.h>
#if defined(CONFIG_ARM) || defined(CONFIG_ARM64)
#include <asm/smp_plat.h>
#endif
#include "qcom_scm.h"
static bool download_mode = IS_ENABLED(CONFIG_QCOM_SCM_DOWNLOAD_MODE_DEFAULT);
@ -264,44 +260,15 @@ static bool __qcom_scm_is_call_available(struct device *dev, u32 svc_id,
return ret ? false : !!res.result[0];
}
#if defined(CONFIG_ARM) || defined(CONFIG_ARM64)
static int __qcom_scm_set_boot_addr_mc(void *entry, const cpumask_t *cpus,
unsigned int flags)
{
struct qcom_scm_desc desc = {
.svc = QCOM_SCM_SVC_BOOT,
.cmd = QCOM_SCM_BOOT_SET_ADDR_MC,
.owner = ARM_SMCCC_OWNER_SIP,
.arginfo = QCOM_SCM_ARGS(6),
};
unsigned int cpu;
u64 map;
/* Need a device for DMA of the additional arguments */
if (!__scm || __get_convention() == SMC_CONVENTION_LEGACY)
return -EOPNOTSUPP;
desc.args[0] = virt_to_phys(entry);
for_each_cpu(cpu, cpus) {
map = cpu_logical_map(cpu);
desc.args[1] |= BIT(MPIDR_AFFINITY_LEVEL(map, 0));
desc.args[2] |= BIT(MPIDR_AFFINITY_LEVEL(map, 1));
desc.args[3] |= BIT(MPIDR_AFFINITY_LEVEL(map, 2));
}
desc.args[4] = ~0ULL; /* Reserved for affinity level 3 */
desc.args[5] = flags;
return qcom_scm_call(__scm->dev, &desc, NULL);
}
#else
static inline int __qcom_scm_set_boot_addr_mc(void *entry, const cpumask_t *cpus,
unsigned int flags)
{
return -EINVAL;
}
#endif
static int __qcom_scm_set_warm_boot_addr(void *entry, const cpumask_t *cpus)
/**
* qcom_scm_set_warm_boot_addr() - Set the warm boot address for cpus
* @entry: Entry point function for the cpus
* @cpus: The cpumask of cpus that will use the entry point
*
* Set the Linux entry point for the SCM to transfer control to when coming
* out of a power down. CPU power down may be executed on cpuidle or hotplug.
*/
int qcom_scm_set_warm_boot_addr(void *entry, const cpumask_t *cpus)
{
int ret;
int flags = 0;
@ -337,28 +304,17 @@ static int __qcom_scm_set_warm_boot_addr(void *entry, const cpumask_t *cpus)
return ret;
}
EXPORT_SYMBOL(qcom_scm_set_warm_boot_addr);
/**
* qcom_scm_set_warm_boot_addr() - Set the warm boot address for cpus
* qcom_scm_set_cold_boot_addr() - Set the cold boot address for cpus
* @entry: Entry point function for the cpus
* @cpus: The cpumask of cpus that will use the entry point
*
* Set the Linux entry point for the SCM to transfer control to when coming
* out of a power down. CPU power down may be executed on cpuidle or hotplug.
* Set the cold boot address of the cpus. Any cpu outside the supported
* range would be removed from the cpu present mask.
*/
int qcom_scm_set_warm_boot_addr(void *entry, const cpumask_t *cpus)
{
if (!cpus || cpumask_empty(cpus))
return -EINVAL;
if (__qcom_scm_set_boot_addr_mc(entry, cpus, QCOM_SCM_BOOT_MC_FLAG_WARMBOOT))
/* Fallback to old SCM call */
return __qcom_scm_set_warm_boot_addr(entry, cpus);
return 0;
}
EXPORT_SYMBOL(qcom_scm_set_warm_boot_addr);
static int __qcom_scm_set_cold_boot_addr(void *entry, const cpumask_t *cpus)
int qcom_scm_set_cold_boot_addr(void *entry, const cpumask_t *cpus)
{
int flags = 0;
int cpu;
@ -375,6 +331,9 @@ static int __qcom_scm_set_cold_boot_addr(void *entry, const cpumask_t *cpus)
.owner = ARM_SMCCC_OWNER_SIP,
};
if (!cpus || cpumask_empty(cpus))
return -EINVAL;
for_each_cpu(cpu, cpus) {
if (cpu < ARRAY_SIZE(scm_cb_flags))
flags |= scm_cb_flags[cpu];
@ -387,25 +346,6 @@ static int __qcom_scm_set_cold_boot_addr(void *entry, const cpumask_t *cpus)
return qcom_scm_call_atomic(__scm ? __scm->dev : NULL, &desc, NULL);
}
/**
* qcom_scm_set_cold_boot_addr() - Set the cold boot address for cpus
* @entry: Entry point function for the cpus
* @cpus: The cpumask of cpus that will use the entry point
*
* Set the cold boot address of the cpus. Any cpu outside the supported
* range would be removed from the cpu present mask.
*/
int qcom_scm_set_cold_boot_addr(void *entry, const cpumask_t *cpus)
{
if (!cpus || cpumask_empty(cpus))
return -EINVAL;
if (__qcom_scm_set_boot_addr_mc(entry, cpus, QCOM_SCM_BOOT_MC_FLAG_COLDBOOT))
/* Fallback to old SCM call */
return __qcom_scm_set_cold_boot_addr(entry, cpus);
return 0;
}
EXPORT_SYMBOL(qcom_scm_set_cold_boot_addr);
/**

4
drivers/firmware/qcom_scm.h
View file

@ -78,12 +78,8 @@ extern int scm_legacy_call(struct device *dev, const struct qcom_scm_desc *desc,
#define QCOM_SCM_BOOT_SET_ADDR 0x01
#define QCOM_SCM_BOOT_TERMINATE_PC 0x02
#define QCOM_SCM_BOOT_SET_DLOAD_MODE 0x10
#define QCOM_SCM_BOOT_SET_ADDR_MC 0x11
#define QCOM_SCM_BOOT_SET_REMOTE_STATE 0x0a
#define QCOM_SCM_FLUSH_FLAG_MASK 0x3
#define QCOM_SCM_BOOT_MC_FLAG_AARCH64 BIT(0)
#define QCOM_SCM_BOOT_MC_FLAG_COLDBOOT BIT(1)
#define QCOM_SCM_BOOT_MC_FLAG_WARMBOOT BIT(2)
#define QCOM_SCM_SVC_PIL 0x02
#define QCOM_SCM_PIL_PAS_INIT_IMAGE 0x01