The only way object_property_add() can fail is when a property with the same name already exists. Since our property names are all hardcoded, failure is a programming error, and the appropriate way to handle it is passing &error_abort. Same for its variants, except for object_property_add_child(), which additionally fails when the child already has a parent. Parentage is also under program control, so this is a programming error, too. We have a bit over 500 callers. Almost half of them pass &error_abort, slightly fewer ignore errors, one test case handles errors, and the remaining few callers pass them to their own callers. The previous few commits demonstrated once again that ignoring programming errors is a bad idea. Of the few ones that pass on errors, several violate the Error API. The Error ** argument must be NULL, &error_abort, &error_fatal, or a pointer to a variable containing NULL. Passing an argument of the latter kind twice without clearing it in between is wrong: if the first call sets an error, it no longer points to NULL for the second call. ich9_pm_add_properties(), sparc32_ledma_realize(), sparc32_dma_realize(), xilinx_axidma_realize(), xilinx_enet_realize() are wrong that way. When the one appropriate choice of argument is &error_abort, letting users pick the argument is a bad idea. Drop parameter @errp and assert the preconditions instead. There's one exception to "duplicate property name is a programming error": the way object_property_add() implements the magic (and undocumented) "automatic arrayification". Don't drop @errp there. Instead, rename object_property_add() to object_property_try_add(), and add the obvious wrapper object_property_add(). Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20200505152926.18877-15-armbru@redhat.com> [Two semantic rebase conflicts resolved]
513 lines
15 KiB
C
513 lines
15 KiB
C
/*
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* ASPEED SDRAM Memory Controller
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*
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* Copyright (C) 2016 IBM Corp.
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*
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* This code is licensed under the GPL version 2 or later. See
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* the COPYING file in the top-level directory.
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*/
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#include "qemu/osdep.h"
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#include "qemu/log.h"
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#include "qemu/module.h"
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#include "qemu/error-report.h"
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#include "hw/misc/aspeed_sdmc.h"
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#include "hw/misc/aspeed_scu.h"
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#include "hw/qdev-properties.h"
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#include "migration/vmstate.h"
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#include "qapi/error.h"
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#include "trace.h"
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#include "qemu/units.h"
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#include "qemu/cutils.h"
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#include "qapi/visitor.h"
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/* Protection Key Register */
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#define R_PROT (0x00 / 4)
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#define PROT_UNLOCKED 0x01
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#define PROT_HARDLOCKED 0x10 /* AST2600 */
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#define PROT_SOFTLOCKED 0x00
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#define PROT_KEY_UNLOCK 0xFC600309
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#define PROT_KEY_HARDLOCK 0xDEADDEAD /* AST2600 */
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/* Configuration Register */
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#define R_CONF (0x04 / 4)
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/* Control/Status Register #1 (ast2500) */
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#define R_STATUS1 (0x60 / 4)
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#define PHY_BUSY_STATE BIT(0)
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#define PHY_PLL_LOCK_STATUS BIT(4)
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#define R_ECC_TEST_CTRL (0x70 / 4)
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#define ECC_TEST_FINISHED BIT(12)
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#define ECC_TEST_FAIL BIT(13)
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/*
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* Configuration register Ox4 (for Aspeed AST2400 SOC)
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*
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* These are for the record and future use. ASPEED_SDMC_DRAM_SIZE is
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* what we care about right now as it is checked by U-Boot to
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* determine the RAM size.
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*/
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#define ASPEED_SDMC_RESERVED 0xFFFFF800 /* 31:11 reserved */
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#define ASPEED_SDMC_AST2300_COMPAT (1 << 10)
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#define ASPEED_SDMC_SCRAMBLE_PATTERN (1 << 9)
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#define ASPEED_SDMC_DATA_SCRAMBLE (1 << 8)
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#define ASPEED_SDMC_ECC_ENABLE (1 << 7)
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#define ASPEED_SDMC_VGA_COMPAT (1 << 6) /* readonly */
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#define ASPEED_SDMC_DRAM_BANK (1 << 5)
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#define ASPEED_SDMC_DRAM_BURST (1 << 4)
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#define ASPEED_SDMC_VGA_APERTURE(x) ((x & 0x3) << 2) /* readonly */
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#define ASPEED_SDMC_VGA_8MB 0x0
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#define ASPEED_SDMC_VGA_16MB 0x1
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#define ASPEED_SDMC_VGA_32MB 0x2
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#define ASPEED_SDMC_VGA_64MB 0x3
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#define ASPEED_SDMC_DRAM_SIZE(x) (x & 0x3)
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#define ASPEED_SDMC_DRAM_64MB 0x0
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#define ASPEED_SDMC_DRAM_128MB 0x1
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#define ASPEED_SDMC_DRAM_256MB 0x2
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#define ASPEED_SDMC_DRAM_512MB 0x3
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#define ASPEED_SDMC_READONLY_MASK \
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(ASPEED_SDMC_RESERVED | ASPEED_SDMC_VGA_COMPAT | \
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ASPEED_SDMC_VGA_APERTURE(ASPEED_SDMC_VGA_64MB))
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/*
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* Configuration register Ox4 (for Aspeed AST2500 SOC and higher)
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*
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* Incompatibilities are annotated in the list. ASPEED_SDMC_HW_VERSION
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* should be set to 1 for the AST2500 SOC.
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*/
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#define ASPEED_SDMC_HW_VERSION(x) ((x & 0xf) << 28) /* readonly */
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#define ASPEED_SDMC_SW_VERSION ((x & 0xff) << 20)
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#define ASPEED_SDMC_CACHE_INITIAL_DONE (1 << 19) /* readonly */
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#define ASPEED_SDMC_AST2500_RESERVED 0x7C000 /* 18:14 reserved */
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#define ASPEED_SDMC_CACHE_DDR4_CONF (1 << 13)
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#define ASPEED_SDMC_CACHE_INITIAL (1 << 12)
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#define ASPEED_SDMC_CACHE_RANGE_CTRL (1 << 11)
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#define ASPEED_SDMC_CACHE_ENABLE (1 << 10) /* differs from AST2400 */
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#define ASPEED_SDMC_DRAM_TYPE (1 << 4) /* differs from AST2400 */
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/* DRAM size definitions differs */
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#define ASPEED_SDMC_AST2500_128MB 0x0
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#define ASPEED_SDMC_AST2500_256MB 0x1
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#define ASPEED_SDMC_AST2500_512MB 0x2
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#define ASPEED_SDMC_AST2500_1024MB 0x3
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#define ASPEED_SDMC_AST2600_256MB 0x0
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#define ASPEED_SDMC_AST2600_512MB 0x1
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#define ASPEED_SDMC_AST2600_1024MB 0x2
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#define ASPEED_SDMC_AST2600_2048MB 0x3
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#define ASPEED_SDMC_AST2500_READONLY_MASK \
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(ASPEED_SDMC_HW_VERSION(0xf) | ASPEED_SDMC_CACHE_INITIAL_DONE | \
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ASPEED_SDMC_AST2500_RESERVED | ASPEED_SDMC_VGA_COMPAT | \
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ASPEED_SDMC_VGA_APERTURE(ASPEED_SDMC_VGA_64MB))
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static uint64_t aspeed_sdmc_read(void *opaque, hwaddr addr, unsigned size)
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{
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AspeedSDMCState *s = ASPEED_SDMC(opaque);
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addr >>= 2;
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if (addr >= ARRAY_SIZE(s->regs)) {
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qemu_log_mask(LOG_GUEST_ERROR,
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"%s: Out-of-bounds read at offset 0x%" HWADDR_PRIx "\n",
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__func__, addr);
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return 0;
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}
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return s->regs[addr];
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}
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static void aspeed_sdmc_write(void *opaque, hwaddr addr, uint64_t data,
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unsigned int size)
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{
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AspeedSDMCState *s = ASPEED_SDMC(opaque);
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AspeedSDMCClass *asc = ASPEED_SDMC_GET_CLASS(s);
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addr >>= 2;
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if (addr >= ARRAY_SIZE(s->regs)) {
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qemu_log_mask(LOG_GUEST_ERROR,
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"%s: Out-of-bounds write at offset 0x%" HWADDR_PRIx "\n",
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__func__, addr);
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return;
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}
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asc->write(s, addr, data);
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}
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static const MemoryRegionOps aspeed_sdmc_ops = {
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.read = aspeed_sdmc_read,
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.write = aspeed_sdmc_write,
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.endianness = DEVICE_LITTLE_ENDIAN,
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.valid.min_access_size = 4,
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.valid.max_access_size = 4,
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};
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static int ast2400_rambits(AspeedSDMCState *s)
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{
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switch (s->ram_size >> 20) {
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case 64:
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return ASPEED_SDMC_DRAM_64MB;
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case 128:
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return ASPEED_SDMC_DRAM_128MB;
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case 256:
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return ASPEED_SDMC_DRAM_256MB;
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case 512:
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return ASPEED_SDMC_DRAM_512MB;
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default:
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g_assert_not_reached();
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break;
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}
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}
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static int ast2500_rambits(AspeedSDMCState *s)
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{
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switch (s->ram_size >> 20) {
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case 128:
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return ASPEED_SDMC_AST2500_128MB;
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case 256:
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return ASPEED_SDMC_AST2500_256MB;
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case 512:
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return ASPEED_SDMC_AST2500_512MB;
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case 1024:
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return ASPEED_SDMC_AST2500_1024MB;
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default:
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g_assert_not_reached();
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break;
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}
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}
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static int ast2600_rambits(AspeedSDMCState *s)
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{
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switch (s->ram_size >> 20) {
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case 256:
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return ASPEED_SDMC_AST2600_256MB;
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case 512:
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return ASPEED_SDMC_AST2600_512MB;
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case 1024:
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return ASPEED_SDMC_AST2600_1024MB;
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case 2048:
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return ASPEED_SDMC_AST2600_2048MB;
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default:
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g_assert_not_reached();
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break;
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}
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}
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static void aspeed_sdmc_reset(DeviceState *dev)
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{
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AspeedSDMCState *s = ASPEED_SDMC(dev);
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AspeedSDMCClass *asc = ASPEED_SDMC_GET_CLASS(s);
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memset(s->regs, 0, sizeof(s->regs));
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/* Set ram size bit and defaults values */
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s->regs[R_CONF] = asc->compute_conf(s, 0);
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}
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static void aspeed_sdmc_get_ram_size(Object *obj, Visitor *v, const char *name,
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void *opaque, Error **errp)
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{
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AspeedSDMCState *s = ASPEED_SDMC(obj);
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int64_t value = s->ram_size;
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visit_type_int(v, name, &value, errp);
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}
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static void aspeed_sdmc_set_ram_size(Object *obj, Visitor *v, const char *name,
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void *opaque, Error **errp)
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{
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int i;
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char *sz;
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int64_t value;
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Error *local_err = NULL;
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AspeedSDMCState *s = ASPEED_SDMC(obj);
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AspeedSDMCClass *asc = ASPEED_SDMC_GET_CLASS(s);
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visit_type_int(v, name, &value, &local_err);
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if (local_err) {
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error_propagate(errp, local_err);
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return;
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}
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for (i = 0; asc->valid_ram_sizes[i]; i++) {
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if (value == asc->valid_ram_sizes[i]) {
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s->ram_size = value;
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return;
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}
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}
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sz = size_to_str(value);
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error_setg(&local_err, "Invalid RAM size %s", sz);
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g_free(sz);
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error_propagate(errp, local_err);
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}
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static void aspeed_sdmc_initfn(Object *obj)
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{
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object_property_add(obj, "ram-size", "int",
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aspeed_sdmc_get_ram_size, aspeed_sdmc_set_ram_size,
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NULL, NULL);
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}
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static void aspeed_sdmc_realize(DeviceState *dev, Error **errp)
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{
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SysBusDevice *sbd = SYS_BUS_DEVICE(dev);
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AspeedSDMCState *s = ASPEED_SDMC(dev);
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AspeedSDMCClass *asc = ASPEED_SDMC_GET_CLASS(s);
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s->max_ram_size = asc->max_ram_size;
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memory_region_init_io(&s->iomem, OBJECT(s), &aspeed_sdmc_ops, s,
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TYPE_ASPEED_SDMC, 0x1000);
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sysbus_init_mmio(sbd, &s->iomem);
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}
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static const VMStateDescription vmstate_aspeed_sdmc = {
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.name = "aspeed.sdmc",
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.version_id = 1,
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.minimum_version_id = 1,
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.fields = (VMStateField[]) {
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VMSTATE_UINT32_ARRAY(regs, AspeedSDMCState, ASPEED_SDMC_NR_REGS),
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VMSTATE_END_OF_LIST()
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}
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};
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static Property aspeed_sdmc_properties[] = {
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DEFINE_PROP_UINT64("max-ram-size", AspeedSDMCState, max_ram_size, 0),
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DEFINE_PROP_END_OF_LIST(),
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};
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static void aspeed_sdmc_class_init(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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dc->realize = aspeed_sdmc_realize;
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dc->reset = aspeed_sdmc_reset;
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dc->desc = "ASPEED SDRAM Memory Controller";
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dc->vmsd = &vmstate_aspeed_sdmc;
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device_class_set_props(dc, aspeed_sdmc_properties);
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}
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static const TypeInfo aspeed_sdmc_info = {
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.name = TYPE_ASPEED_SDMC,
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.parent = TYPE_SYS_BUS_DEVICE,
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.instance_size = sizeof(AspeedSDMCState),
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.instance_init = aspeed_sdmc_initfn,
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.class_init = aspeed_sdmc_class_init,
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.class_size = sizeof(AspeedSDMCClass),
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.abstract = true,
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};
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static uint32_t aspeed_2400_sdmc_compute_conf(AspeedSDMCState *s, uint32_t data)
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{
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uint32_t fixed_conf = ASPEED_SDMC_VGA_COMPAT |
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ASPEED_SDMC_DRAM_SIZE(ast2400_rambits(s));
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/* Make sure readonly bits are kept */
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data &= ~ASPEED_SDMC_READONLY_MASK;
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return data | fixed_conf;
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}
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static void aspeed_2400_sdmc_write(AspeedSDMCState *s, uint32_t reg,
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uint32_t data)
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{
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if (reg == R_PROT) {
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s->regs[reg] = (data == PROT_KEY_UNLOCK) ? PROT_UNLOCKED : PROT_SOFTLOCKED;
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return;
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}
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if (!s->regs[R_PROT]) {
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qemu_log_mask(LOG_GUEST_ERROR, "%s: SDMC is locked!\n", __func__);
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return;
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}
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switch (reg) {
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case R_CONF:
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data = aspeed_2400_sdmc_compute_conf(s, data);
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break;
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default:
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break;
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}
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s->regs[reg] = data;
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}
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static const uint64_t
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aspeed_2400_ram_sizes[] = { 64 * MiB, 128 * MiB, 256 * MiB, 512 * MiB, 0};
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static void aspeed_2400_sdmc_class_init(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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AspeedSDMCClass *asc = ASPEED_SDMC_CLASS(klass);
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dc->desc = "ASPEED 2400 SDRAM Memory Controller";
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asc->max_ram_size = 512 << 20;
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asc->compute_conf = aspeed_2400_sdmc_compute_conf;
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asc->write = aspeed_2400_sdmc_write;
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asc->valid_ram_sizes = aspeed_2400_ram_sizes;
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}
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static const TypeInfo aspeed_2400_sdmc_info = {
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.name = TYPE_ASPEED_2400_SDMC,
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.parent = TYPE_ASPEED_SDMC,
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.class_init = aspeed_2400_sdmc_class_init,
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};
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static uint32_t aspeed_2500_sdmc_compute_conf(AspeedSDMCState *s, uint32_t data)
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{
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uint32_t fixed_conf = ASPEED_SDMC_HW_VERSION(1) |
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ASPEED_SDMC_VGA_APERTURE(ASPEED_SDMC_VGA_64MB) |
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ASPEED_SDMC_CACHE_INITIAL_DONE |
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ASPEED_SDMC_DRAM_SIZE(ast2500_rambits(s));
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/* Make sure readonly bits are kept */
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data &= ~ASPEED_SDMC_AST2500_READONLY_MASK;
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return data | fixed_conf;
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}
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static void aspeed_2500_sdmc_write(AspeedSDMCState *s, uint32_t reg,
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uint32_t data)
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{
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if (reg == R_PROT) {
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s->regs[reg] = (data == PROT_KEY_UNLOCK) ? PROT_UNLOCKED : PROT_SOFTLOCKED;
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return;
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}
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if (!s->regs[R_PROT]) {
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qemu_log_mask(LOG_GUEST_ERROR, "%s: SDMC is locked!\n", __func__);
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return;
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}
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switch (reg) {
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case R_CONF:
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data = aspeed_2500_sdmc_compute_conf(s, data);
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break;
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case R_STATUS1:
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/* Will never return 'busy' */
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data &= ~PHY_BUSY_STATE;
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break;
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case R_ECC_TEST_CTRL:
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/* Always done, always happy */
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data |= ECC_TEST_FINISHED;
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data &= ~ECC_TEST_FAIL;
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break;
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default:
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break;
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}
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s->regs[reg] = data;
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}
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static const uint64_t
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aspeed_2500_ram_sizes[] = { 128 * MiB, 256 * MiB, 512 * MiB, 1024 * MiB, 0};
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static void aspeed_2500_sdmc_class_init(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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AspeedSDMCClass *asc = ASPEED_SDMC_CLASS(klass);
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dc->desc = "ASPEED 2500 SDRAM Memory Controller";
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asc->max_ram_size = 1024 << 20;
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asc->compute_conf = aspeed_2500_sdmc_compute_conf;
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asc->write = aspeed_2500_sdmc_write;
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asc->valid_ram_sizes = aspeed_2500_ram_sizes;
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}
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static const TypeInfo aspeed_2500_sdmc_info = {
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.name = TYPE_ASPEED_2500_SDMC,
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.parent = TYPE_ASPEED_SDMC,
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.class_init = aspeed_2500_sdmc_class_init,
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};
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static uint32_t aspeed_2600_sdmc_compute_conf(AspeedSDMCState *s, uint32_t data)
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{
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uint32_t fixed_conf = ASPEED_SDMC_HW_VERSION(3) |
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ASPEED_SDMC_VGA_APERTURE(ASPEED_SDMC_VGA_64MB) |
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ASPEED_SDMC_DRAM_SIZE(ast2600_rambits(s));
|
|
|
|
/* Make sure readonly bits are kept (use ast2500 mask) */
|
|
data &= ~ASPEED_SDMC_AST2500_READONLY_MASK;
|
|
|
|
return data | fixed_conf;
|
|
}
|
|
|
|
static void aspeed_2600_sdmc_write(AspeedSDMCState *s, uint32_t reg,
|
|
uint32_t data)
|
|
{
|
|
if (s->regs[R_PROT] == PROT_HARDLOCKED) {
|
|
qemu_log_mask(LOG_GUEST_ERROR, "%s: SDMC is locked until system reset!\n",
|
|
__func__);
|
|
return;
|
|
}
|
|
|
|
if (reg != R_PROT && s->regs[R_PROT] == PROT_SOFTLOCKED) {
|
|
qemu_log_mask(LOG_GUEST_ERROR, "%s: SDMC is locked!\n", __func__);
|
|
return;
|
|
}
|
|
|
|
switch (reg) {
|
|
case R_PROT:
|
|
if (data == PROT_KEY_UNLOCK) {
|
|
data = PROT_UNLOCKED;
|
|
} else if (data == PROT_KEY_HARDLOCK) {
|
|
data = PROT_HARDLOCKED;
|
|
} else {
|
|
data = PROT_SOFTLOCKED;
|
|
}
|
|
break;
|
|
case R_CONF:
|
|
data = aspeed_2600_sdmc_compute_conf(s, data);
|
|
break;
|
|
case R_STATUS1:
|
|
/* Will never return 'busy'. 'lock status' is always set */
|
|
data &= ~PHY_BUSY_STATE;
|
|
data |= PHY_PLL_LOCK_STATUS;
|
|
break;
|
|
case R_ECC_TEST_CTRL:
|
|
/* Always done, always happy */
|
|
data |= ECC_TEST_FINISHED;
|
|
data &= ~ECC_TEST_FAIL;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
s->regs[reg] = data;
|
|
}
|
|
|
|
static const uint64_t
|
|
aspeed_2600_ram_sizes[] = { 256 * MiB, 512 * MiB, 1024 * MiB, 2048 * MiB, 0};
|
|
|
|
static void aspeed_2600_sdmc_class_init(ObjectClass *klass, void *data)
|
|
{
|
|
DeviceClass *dc = DEVICE_CLASS(klass);
|
|
AspeedSDMCClass *asc = ASPEED_SDMC_CLASS(klass);
|
|
|
|
dc->desc = "ASPEED 2600 SDRAM Memory Controller";
|
|
asc->max_ram_size = 2048 << 20;
|
|
asc->compute_conf = aspeed_2600_sdmc_compute_conf;
|
|
asc->write = aspeed_2600_sdmc_write;
|
|
asc->valid_ram_sizes = aspeed_2600_ram_sizes;
|
|
}
|
|
|
|
static const TypeInfo aspeed_2600_sdmc_info = {
|
|
.name = TYPE_ASPEED_2600_SDMC,
|
|
.parent = TYPE_ASPEED_SDMC,
|
|
.class_init = aspeed_2600_sdmc_class_init,
|
|
};
|
|
|
|
static void aspeed_sdmc_register_types(void)
|
|
{
|
|
type_register_static(&aspeed_sdmc_info);
|
|
type_register_static(&aspeed_2400_sdmc_info);
|
|
type_register_static(&aspeed_2500_sdmc_info);
|
|
type_register_static(&aspeed_2600_sdmc_info);
|
|
}
|
|
|
|
type_init(aspeed_sdmc_register_types);
|