xref: /aosp_15_r20/external/coreboot/src/soc/qualcomm/sc7280/cpucp_load_reset.c (revision b9411a12aaaa7e1e6a6fb7c5e057f44ee179a49c) 
1 /* SPDX-License-Identifier: GPL-2.0-only */
2 
3 #include <assert.h>
4 #include <console/console.h>
5 #include <program_loading.h>
6 #include <soc/mmu.h>
7 #include <soc/cpucp.h>
8 #include <soc/clock.h>
9 #include <device/mmio.h>
10 #include <timer.h>
11 
cpucp_prepare(void)12 void cpucp_prepare(void)
13 {
14 	/* allow NS access to EPSS memory */
15 	setbits32(&epss_top->access_override, 0x1);
16 
17 	/* Enable subsystem clock. Required for CPUCP PDMEM access */
18 	setbits32(&epss_fast->epss_muc_clk_ctrl, 0x1);
19 }
20 
cpucp_fw_load_reset(void)21 void cpucp_fw_load_reset(void)
22 {
23 	struct prog cpucp_fw_prog =
24 		PROG_INIT(PROG_PAYLOAD, CONFIG_CBFS_PREFIX "/cpucp");
25 
26 	if (!wait_ms(300, (read32(&epss_fast->epss_muc_clk_ctrl) & 0x1) == 0x1))
27 		printk(BIOS_ERR, "%s: cannot get CPUCP PDMEM access.\n", __func__);
28 
29 	if (!selfload(&cpucp_fw_prog))
30 		die("SOC image: CPUCP load failed");
31 
32 	printk(BIOS_DEBUG, "SOC:CPUCP image loaded successfully.\n");
33 }
34