soc/intel/quark: make use of common cbmem_top_chipset

This replaces quark's own implementation of cbmem_top_chipset and
selects the common code one.

Change-Id: I445c471b654abfa922b20215e52a2794529be120
Signed-off-by: Michael Niewöhner <foss@mniewoehner.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36621
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-by: Nico Huber <nico.h@gmx.de>

src/soc/intel/quark/Kconfig

@@ -32,6 +32,8 @@ config CPU_SPECIFIC_OPTIONS
 	select PLATFORM_USES_FSP2_0
 	select SOC_INTEL_COMMON
 	select SOC_INTEL_COMMON_RESET
+	select SOC_INTEL_COMMON_BLOCK
+	select SOC_INTEL_COMMON_BLOCK_SA_FSP_TOLUM
 	select SOC_SETS_MSRS
 	select SPI_FLASH
 	select UART_OVERRIDE_REFCLK

src/soc/intel/quark/memmap.c

@@ -18,23 +18,6 @@
 #include <cbmem.h>
 #include <soc/reg_access.h>
 
-void *cbmem_top_chipset(void)
-{
-	uint32_t top_of_memory;
-
-	/* Determine the TSEG base */
-	top_of_memory = reg_host_bridge_unit_read(QNC_MSG_FSBIC_REG_HSMMC);
-	top_of_memory &= SMM_START_MASK;
-	top_of_memory <<= 16;
-
-	/* Reserve 64 KiB for RMU firmware */
-	if (top_of_memory)
-		top_of_memory -= 0x10000;
-
-	/* Return the top of memory */
-	return (void *)top_of_memory;
-}
-
 void fill_postcar_frame(struct postcar_frame *pcf)
 {
 	uintptr_t top_of_ram;