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86aeee4d0a
Introduce ARCH_REALTEK Kconfig option also for 32-bit Arm. Override the text offset to cope with boot ROM occupying first 0xa800 bytes and further reservations up to 0xf4000 (compare Device Tree). Add a custom machine_desc to enforce memory carveout for I/O registers. Signed-off-by: Andreas Färber <afaerber@suse.de>
40 lines
912 B
C
40 lines
912 B
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Realtek RTD1195
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*
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* Copyright (c) 2017-2019 Andreas Färber
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*/
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#include <linux/memblock.h>
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#include <asm/mach/arch.h>
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static void __init rtd1195_memblock_remove(phys_addr_t base, phys_addr_t size)
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{
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int ret;
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ret = memblock_remove(base, size);
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if (ret)
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pr_err("Failed to remove memblock %pa (%d)\n", &base, ret);
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}
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static void __init rtd1195_reserve(void)
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{
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/* Exclude boot ROM from RAM */
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rtd1195_memblock_remove(0x00000000, 0x0000a800);
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/* Exclude peripheral register spaces from RAM */
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rtd1195_memblock_remove(0x18000000, 0x00070000);
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rtd1195_memblock_remove(0x18100000, 0x01000000);
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}
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static const char *const rtd1195_dt_compat[] __initconst = {
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"realtek,rtd1195",
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NULL
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};
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DT_MACHINE_START(rtd1195, "Realtek RTD1195")
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.dt_compat = rtd1195_dt_compat,
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.reserve = rtd1195_reserve,
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.l2c_aux_val = 0x0,
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.l2c_aux_mask = ~0x0,
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MACHINE_END
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