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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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ea38960fb6
prima2 and marco have diffetent l2 cache configuration, so we initialize l2x0 cache based on dtb given to kernel. Signed-off-by: Barry Song <Baohua.Song@csr.com> Reviewed-by: Mark Rutland <mark.rutland@arm.com>
51 lines
1.1 KiB
C
51 lines
1.1 KiB
C
/*
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* l2 cache initialization for CSR SiRFprimaII
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*
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* Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
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*
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* Licensed under GPLv2 or later.
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*/
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/of.h>
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#include <asm/hardware/cache-l2x0.h>
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struct l2x0_aux
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{
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u32 val;
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u32 mask;
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};
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static struct l2x0_aux prima2_l2x0_aux __initconst = {
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.val = 2 << L2X0_AUX_CTRL_WAY_SIZE_SHIFT,
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.mask = 0,
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};
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static struct l2x0_aux marco_l2x0_aux __initconst = {
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.val = (2 << L2X0_AUX_CTRL_WAY_SIZE_SHIFT) |
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(1 << L2X0_AUX_CTRL_ASSOCIATIVITY_SHIFT),
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.mask = L2X0_AUX_CTRL_MASK,
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};
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static struct of_device_id sirf_l2x0_ids[] __initconst = {
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{ .compatible = "sirf,prima2-pl310-cache", .data = &prima2_l2x0_aux, },
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{ .compatible = "sirf,marco-pl310-cache", .data = &marco_l2x0_aux, },
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{},
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};
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static int __init sirfsoc_l2x0_init(void)
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{
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struct device_node *np;
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const struct l2x0_aux *aux;
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np = of_find_matching_node(NULL, sirf_l2x0_ids);
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if (np) {
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aux = of_match_node(sirf_l2x0_ids, np)->data;
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return l2x0_of_init(aux->val, aux->mask);
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}
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return 0;
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}
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early_initcall(sirfsoc_l2x0_init);
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