C++ (Cpp) bam_set_ee Exemples

Exemple #1

Fichier : bam.c Projet : FPChaim/android_kernel_lge_msm7x27-3.0.x

/**
 * Initialize BAM device security execution environment
 */
int bam_security_init(void *base, u32 ee, u32 vmid, u32 pipe_mask)
{
	u32 version;
	u32 num_pipes;
	u32 mask;
	u32 pipe;

	/*
	 * Discover the hardware version number and the number of pipes
	 * supported by this BAM
	 */
	version = bam_read_reg_field(base, REVISION, BAM_REVISION);
	num_pipes = bam_read_reg_field(base, NUM_PIPES, BAM_NUM_PIPES);
	if (version < 3 || version > 0x1F) {
		SPS_ERR("sps:bam 0x%x(va) security is not supported for this"
			"BAM version 0x%x.\n", (u32) base, version);
		return -ENODEV;
	}

	if (num_pipes > BAM_MAX_PIPES)
		return -ENODEV;

	for (pipe = 0, mask = 1; pipe < num_pipes; pipe++, mask <<= 1)
		if ((mask & pipe_mask) != 0)
			bam_pipe_set_ee(base, pipe, ee, vmid);

	/* If MSbit is set, assign top-level interrupt to this EE */
	mask = 1UL << 31;
	if ((mask & pipe_mask) != 0)
		bam_set_ee(base, ee, vmid, BAM_NONSECURE_RESET_ENABLE);

	return 0;
}

Exemple #2

int bam_security_init(void *base, u32 ee, u32 vmid, u32 pipe_mask)
{
	u32 version;
	u32 num_pipes;
	u32 mask;
	u32 pipe;

	SPS_DBG2("sps:%s:bam=0x%x(va).", __func__, (u32) base);

	version = bam_read_reg_field(base, REVISION, BAM_REVISION);
	num_pipes = bam_read_reg_field(base, NUM_PIPES, BAM_NUM_PIPES);
	if (version < 3 || version > 0x1F) {
		SPS_ERR("sps:bam 0x%x(va) security is not supported for this"
			"BAM version 0x%x.\n", (u32) base, version);
		return -ENODEV;
	}

	if (num_pipes > BAM_MAX_PIPES) {
		SPS_ERR("sps:bam 0x%x(va) the number of pipes is more than "
			"the maximum number allowed.", (u32) base);
		return -ENODEV;
	}

	for (pipe = 0, mask = 1; pipe < num_pipes; pipe++, mask <<= 1)
		if ((mask & pipe_mask) != 0)
			bam_pipe_set_ee(base, pipe, ee, vmid);

	
	mask = 1UL << 31;
	if ((mask & pipe_mask) != 0)
		bam_set_ee(base, ee, vmid, BAM_NONSECURE_RESET_ENABLE);

	return 0;
}