Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Old U-boot compatibility for MPC5200
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  * Author: Grant Likely <grant.likely@secretlab.ca>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  * Copyright (c) 2007 Secret Lab Technologies Ltd.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8)  * Copyright (c) 2007 Freescale Semiconductor, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include "ops.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include "stdio.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include "io.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include "cuboot.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #define TARGET_PPC_MPC52xx
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include "ppcboot.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) static bd_t bd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) static void platform_fixups(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	void *soc, *reg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	int div;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	u32 sysfreq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	dt_fixup_memory(bd.bi_memstart, bd.bi_memsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	dt_fixup_mac_addresses(bd.bi_enetaddr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	dt_fixup_cpu_clocks(bd.bi_intfreq, bd.bi_busfreq / 4, bd.bi_busfreq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	/* Unfortunately, the specific model number is encoded in the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	 * soc node name in existing dts files -- once that is fixed,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	 * this can do a simple path lookup.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	soc = find_node_by_devtype(NULL, "soc");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	if (!soc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 		soc = find_node_by_compatible(NULL, "fsl,mpc5200-immr");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	if (!soc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 		soc = find_node_by_compatible(NULL, "fsl,mpc5200b-immr");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	if (soc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 		setprop(soc, "bus-frequency", &bd.bi_ipbfreq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 			sizeof(bd.bi_ipbfreq));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 		if (!dt_xlate_reg(soc, 0, (void*)&reg, NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 			return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 		div = in_8(reg + 0x204) & 0x0020 ? 8 : 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 		sysfreq = bd.bi_busfreq * div;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 		setprop(soc, "system-frequency", &sysfreq, sizeof(sysfreq));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)                    unsigned long r6, unsigned long r7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 	CUBOOT_INIT();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 	fdt_init(_dtb_start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	serial_console_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 	platform_ops.fixups = platform_fixups;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) }